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Scientific Data Documentation
Detail Natality, 1991
DSN: CC36.NATAL91

Public Use Data Tape Documentation - Natality Detail 1991 Data


 This  tape  documentation was prepared in the Division of Vital Statistics.
 Virginia  Brainard  and  Manju Sharma of the Systems and Programming Branch
 were   responsible  for  developing  the  natality  documentation  and  for
 providing  all  of  the  computer programming services necessary to keep it
 up-to-date.  T.J. Mathews of the Natality, Marriage, and Divorce Statistics
 Branch prepared the Technical Appendix. The Registration Methods Branch and
 the   Technical  Services  Branch  provided  consultation  to  State  Vital
 Statistics offices regarding collection of birth certificate data.

 Questions on the documentation or general questions concerning the natality
 file  should be directed to the Systems and Programming Branch, Division of
 Vital Statistics, NCHS, 6525 Belcrest Road, Room 840, Hyattsville, MD 20782
 (301-436-8900).

 Questions  concerning  the  Technical  Appendix  or  substantive  questions
 concerning  the natality data should be directed to the Natality, Marriage,
 and  Divorce  Statistics  Branch,  Division of Vital Statistics, NCHS, 6525
 Belcrest Road, Room 840, Hyattsville, MD 20782 (301-436-8954).


 Documentation of the Detail Natality Data File for 1991 Data                   

 Since  1985 natality statistics for all States and the District of Columbia
 have  been  based  on  information  from  the  total  file  of records. The
 information  is  received  on  computer  data tapes coded by the States and
 provided  to  the  National Center for Health Statistics (NCHS) through the
 Vital  Statistics Cooperative Program. NCHS receives the data for this file
 from  the registration offices of all States, the District of Columbia, and
 New York City.

 Natality  data for the United States are limited to births occurring within
 the   United   States   to  U.S.  residents  and  nonresidents.  Births  to
 nonresidents  of  the  United  States  are excluded from all tabulations by
 place  of  residence.  Births occurring to U.S. citizens outside the United
 States are not included in this file.

 Effective  January  1,  1989,  a  revised U.S. Standard Certificate of Live
 Birth replaced the 1978 revision. The 1989 revision provides a wide variety
 of   new   information  on  maternal  and  infant  health  characteristics,
 representing a significant departure from previous versions in both content
 and  format.  For  a  more detailed discussion of the revised and new items
 refer to the technical appendix part of this document.

 The Office of Management and Budget revised its designation of metropolitan
 statistical areas based on figures from the 1990 Census. Effective with the
 1990  data  file,  NCHS  has  been using these new definitions and codes as
 indicated  in  the  listing  of  320 Metropolitan Statistical Areas (MSAs),
 Primary  Metropolitan  Statistical  Areas  (PMSAs),  and New England County
 Metropolitan  Areas (NECMAs) included in this documentation. There are also
 20  Consolidated  Metropolitan Statistical Areas (CMSAs), which are made up
 of  PMSAs.  Other  geographic  changes  based  on  the  1990 Census will be
 implemented later.

 NCHS  has  adopted  a new policy on release of vital statistics unit record
 data  files. This new policy was implemented for the 1989 vital event files
 to prevent the inadvertent disclosure of individuals and institutions. As a
 result, the files for 1989 and later years do not contain the actual day of
 the  birth  or  the  dates of birth of the mother or father. The geographic
 detail  is  also  restricted;  only  counties and cities of 100,000 or more
 population  based  on  the  1980  Census,  as well as metropolitan areas of
 100,000 or more population based on the 1990 Census, are identified.


 Included in this document are:

 1. List of data elements and tape locations.

 2. Machine/File/Data Characteristics.

 3. Detail Record Layout.

 4. Geographic Code Outline.

 5. Metropolitan Statistical Areas as adapted for use by NCHS/DVS.

 6. Documentation Tables 1-26.

 7. Technical Appendix.



       SYMBOLS USED IN TABLES

       Symbol          Explanation

         ---           Data not available

         ...           Category not applicable

           -           Quantity zero

         0.0           Quantity more than 0 but less than 0.05

           *           Figure does not meet standards of
                       reliability or precision


  List of Data Elements and Tape Locations                                


                                                      Tape
     Data Items                                       Locations

 1.  General
     a. Data year                                     1-4
     b. Record type                                   5
     c. Resident status                               6

 2.  Occurrence
     a. NCHS State                                    16-17
     b. Expanded NCHS State                           14-15
     c. NCHS County                                   18-20
     d. Population size - county                      26
     e. Division                                      12
     f. Region                                        11
     g. FIPS State                                    21-22
     h. FIPS County                                   23-25

 3.  Residence
     a. NCHS State                                    32-33
     b. Expanded NCHS State                           30-31
     c. NCHS County                                   34-36
     d. NCHS City                                     37-39
     e. Population size - city                        40
     f. Population size - county                      58
     g. NCHS MSA                                      347-349
     h. Met/Nonmet county                             41
     i. Division                                      28
     j. Region                                        27
     k. FIPS State                                    42-43
     l. FIPS County                                   44-46
     m. CMSA                                          52-53
     n. FIPS MSA                                      54-57

 4.  Prenatal Care
     a. Month began                                   106-109
     b. Number of visits                              110-113
     c. Adequacy of care recode                       93

 5.  Child
     a. Sex                                           188-189
     b. Race                                          190-192
     c. Number at delivery                            201
     d. Birthweight                                   193-199
     e. Apgar score                                   202-207
     f. Gestation                                     182-187,208-209
     g. Month/year of birth                           172-173,176-179
     h. Day of week of birth                          180

                                                      Tape
     Data Items                                       Locations

 6.  Mother
     a. Age                                           69-76,91-92
     b. Race                                          79-82
     c. Marital status                                86-87
     d. Education                                     83-85
     e. Place of birth                                88-90
     f. Hispanic origin                               77-78

 7.  Pregnancy History
     a. Born alive, now living                        94-95
     b. Born alive, now dead                          96-97
     c. Other terminations                            98-99
     d. Total birth order                             103-105
     e. Live birth order                              100-102

 8.  Father
     a. Age                                           154-157,166-167
     b. Race                                          160-162
     c. Education                                     163-165
     d. Hispanic origin                               158-159

 9.  Other Items
     a. Residence reporting flags                     307-324
     b. Attendant at birth                            10
     c. Place of delivery                             8-9
     d. Interval since last live birth                128-132

 10. Medical and Health Data
     a. Method of delivery                            217-224
     b. Medical risk factors                          225-241
     c. Other risk factors
         Tobacco                                      242-245
         Alcohol                                      246-249
         Weight gain during pregnancy                 250-252
     d. Obstetric procedures                          253-259
     e. Complications of labor and/or delivery        260-275
     f. Abnormal conditions of the newborn            276-284
     g. Congenital anomalies                          285-306


 Machine/File/Data Characteristics:                                             


  1. Machine used:                IBM/3081/K
  2. Language used:               PL/I
  3. File organization:           One file, multiple reels
  4. Record format:               Blocked, fixed format
  5. Record count:                4,115,342
  6. Record length:               350
  7. Blocksize:                   32550
  8. Recording mode:              IBM/EBCDIC 8-bit code
  9. Code scheme:                 Numeric/Alphabetic/Blanks
 10. Last block:                  May be a short block

 11. Data counts:                 a. By occurrence:       4,115,342
                                  b. By residence:        4,110,907
                                  c. To foreign residents:    4,435


 Geographic Code Outline                             

 The  following pages show in detail the geographic codes used by the Division of
 Vital  Statistics  in the processing of vital event data occurring in the United
 States.  When  an  event occurs to a nonresident of the United States, residence
 data  are  coded only to the "State" level; several western hemisphere countries
 or  the  remainder of the world are uniquely identified. Along with the Division
 of  Vital  Statistics  codes the Federal Information Processing Standards (FIPS)
 codes  are shown for several items. Both sets of codes appear on the vital event
 public-use files. The Metropolitan Statistical Area codes are effective with the
 1990  data  year and are based on the 1990 Census. All other codes are effective
 with the 1982 data year and are based on results of the 1980 Census.

 To aid the user in interpreting the geographic codes, a brief explanation of the
 codes and of the column headings/abbreviations shown on the following pages are:

 State (St): Each State and the District of Columbia are numbered alphabetically.
 In addition, several unique codes are used to identify nonresidents of the U.S.

 County  (Cnty):  Counties  and  county  equivalents (independent and coextensive
 cities) are numbered alphabetically within each State.

 MSA:  Metropolitan statistical areas are those established by the U.S. Office of
 Management  and  Budget  (OMB)  using  1990  Census  population  counts. For New
 England, the New England County Metropolitan Areas (NECMA) are used.

 M/NM:   Metropolitan   counties   (code  1)  are  component  counties  of  MSAs.
 Nonmetropolitan counties (code 2) are not part of any MSA.

 City:  Cities  are  numbered  alphabetically within each State and identify each
 city with a population of 10,000 or more in 1980.

 P/S:  Population size code for city of residence based on the 1980 Census. Refer
 to  the  code  outline  given  earlier  in  this document for specific codes and
 meanings.

 Name:  Each  State,  county,  and  city name is listed along with its respective
 code.  In  addition,  places  used to identify nonresidents of the U.S. are also
 listed along with their codes.

 FIPS:  For  an  explanation  of  FIPS codes, reference should be made to various
 National Bureau of Standards (NBS) publications.

 So! How do I find Yavapai county, Arizona; or Tupelo city, Mississippi?

 Since counties and cities are numbered within State, the State and county or the
 State  and  city codes must be used to select these areas. It is most helpful if
 the  county is known when looking for a particular city since areas are shown by
 State, county, and city.

 Yavapai county, Arizona - State and county codes 03 013.

 Tupelo,  Mississippi  - State and city codes 25 025 or State, county, city codes
 25 041 025.



1991 Detail Natality Record

 Tape      Field
 Location  Size   Item and Code Outline
 ________  _____  _____________________



 1-4         4    DATAYEAR
                  Year of Birth of Child (Data Year)
                 __________________________________

                    1991      ... 1991



 5           1    RECTYPE
                  Record Type
                 ___________

                    1         ... Resident:  State and county of occurrence and residence
                                  are the same.
                    2         ... Nonresident:  State and/or county of occurrence
                                  and residence are different.



 6           1    RESTATUS
                  Resident Status
                 _______________

                    1         ... Resident:  State and county of occurrence and residence
                                  are the same.
                    2         ... Intrastate nonresident:  State of occurrence and
                                  residence are the same, but county is different.
                    3         ... Interstate nonresident:  State of occurrence and
                                  residence are different, but both are in the U.S.
                    4         ... Foreign resident:  State of occurrence is one of
                                  the 50 States or the District of Columbia, but the 
                                  residence of the mother is outside of the U.S.



 7           1    RECWT
                  Record Weight
                 _____________

                    1         ... Constant - as of the 1985 data year, this file
                                  contains data on a 100-percent basis from all 
                                  reporting areas.



 8           1    PLDEL
                  Place or Facility of Birth
                 __________________________

                    1         ... Hospital
                    2         ... Freestanding Birthing Center
                    3         ... Clinic or Doctor's Office
                    4         ... A Residence
                    5         ... Other
                    9         ... Unknown or Not Stated



 9           1    PLDEL3
                  Place or Facility of Birth Recode
                 _________________________________

                    1         ... In Hospital
                    2         ... Not in a Hospital
                    3         ... Unknown or Not Stated



 10          1    BIRATTND
                  Attendant at Birth
                 __________________

                    1         ... Doctor of Medicine (M.D.)
                    2         ... Doctor of Osteopathy (D.O.)
                    3         ... Certified Nurse Midwife (C.N.M.)
                    4         ... Other Midwife
                    5         ... Other
                    9         ... Unknown or Not Stated

 
                                             1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________

 11-26      16    NOCCUR
                  Place of Occurrence
                 ___________________


 11-13       3    RDSSCOCC
                  Region, Division, and State Subcode of Occurrence
                 _________________________________________________


 11          1    REGNOCC
                  Region of Occurrence
                 ____________________


 12          1    DIVOCC
                  Division of Occurrence
                 ______________________


 13          1    STSUBOCC
                  State Subcode of Occurrence
                 ___________________________

                    States are coded within division and the code structure 
                    is designed to sequence the States as they appear in NCHS 
                    publications.

                    1         ... NORTHEAST
                      1       ...   New England
                        1     ...     Maine
                        2     ...     New Hampshire
                        3     ...     Vermont
                        4     ...     Massachusetts
                        5     ...     Rhode Island
                        6     ...     Connecticut
                      2       ...   Middle Atlantic
                        1     ...     New York
                        2     ...     New Jersey
                        3     ...     Pennsylvania
                    2         ... MIDWEST
                      3       ...   East North Central
                        1     ...     Ohio
                        2     ...     Indiana
                        3     ...     Illinois
                        4     ...     Michigan
                        5     ...     Wisconsin
                      4       ...   West North Central
                        1     ...     Minnesota
                        2     ...     Iowa
                        3     ...     Missouri
                        4     ...     North Dakota
                        5     ...     South Dakota
                        6     ...     Nebraska
                        7     ...     Kansas
                    3         ... SOUTH
                      5       ...   South Atlantic
                        1     ...     Delaware
                        2     ...     Maryland
                        3     ...     District of Columbia
                        4     ...     Virginia
                        5     ...     West Virginia
                        6     ...     North Carolina
                        7     ...     South Carolina
                        8     ...     Georgia
                        9     ...     Florida
                      6       ...   East South Central
                        1     ...     Kentucky
                        2     ...     Tennessee
                        3     ...     Alabama
                        4     ...     Mississippi
                      7       ...   West South Central
                        1     ...     Arkansas
                        2     ...     Louisiana
                        3     ...     Oklahoma
                        4     ...     Texas

                                          

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 13          1    STSUBOCC
                  Region, Division, and State Subcode of Occurrence (Continued)
                 _____________________________________________________________

                    4         ... WEST
                      8       ...   Mountain
                        1     ...     Montana
                        2     ...     Idaho
                        3     ...     Wyoming
                        4     ...     Colorado
                        5     ...     New Mexico
                        6     ...     Arizona
                        7     ...     Utah
                        8     ...     Nevada
                      9       ...   Pacific
                        1     ...     Washington
                        2     ...     Oregon
                        3     ...     California
                        4     ...     Alaska
                        5     ...     Hawaii

 
                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 14-15       2    STNATEXP
                  Expanded State of Occurrence
                 ____________________________

                    This item is designed to separately identify New York 
                    city records from other New York State records.

                    01        ... Alabama
                    02        ... Alaska
                    03        ... Arizona
                    04        ... Arkansas
                    05        ... California
                    06        ... Colorado
                    07        ... Connecticut
                    08        ... Delaware
                    09        ... District of Columbia
                    10        ... Florida
                    11        ... Georgia
                    12        ... Hawaii
                    13        ... Idaho
                    14        ... Illinois
                    15        ... Indiana
                    16        ... Iowa
                    17        ... Kansas
                    18        ... Kentucky
                    19        ... Louisiana
                    20        ... Maine
                    21        ... Maryland
                    22        ... Massachusetts
                    23        ... Michigan
                    24        ... Minnesota
                    25        ... Mississippi
                    26        ... Missouri
                    27        ... Montana
                    28        ... Nebraska
                    29        ... Nevada
                    30        ... New Hampshire
                    31        ... New Jersey
                    32        ... New Mexico
                    33        ... New York
                    34        ... New York city
                    35        ... North Carolina
                    36        ... North Dakota
                    37        ... Ohio
                    38        ... Oklahoma
                    39        ... Oregon
                    40        ... Pennsylvania
                    41        ... Rhode Island
                    42        ... South Carolina
                    43        ... South Dakota
                    44        ... Tennessee
                    45        ... Texas
                    46        ... Utah
                    47        ... Vermont
                    48        ... Virginia
                    49        ... Washington
                    50        ... West Virginia
                    51        ... Wisconsin
                    52        ... Wyoming


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 16-17       2    STATENAT
                  State of Occurrence
                 ___________________

                    01        ... Alabama
                    02        ... Alaska
                    03        ... Arizona
                    04        ... Arkansas
                    05        ... California
                    06        ... Colorado
                    07        ... Connecticut
                    08        ... Delaware
                    09        ... District of Columbia
                    10        ... Florida
                    11        ... Georgia
                    12        ... Hawaii
                    13        ... Idaho
                    14        ... Illinois
                    15        ... Indiana
                    16        ... Iowa
                    17        ... Kansas
                    18        ... Kentucky
                    19        ... Louisiana
                    20        ... Maine
                    21        ... Maryland
                    22        ... Massachusetts
                    23        ... Michigan
                    24        ... Minnesota
                    25        ... Mississippi
                    26        ... Missouri
                    27        ... Montana
                    28        ... Nebraska
                    29        ... Nevada
                    30        ... New Hampshire
                    31        ... New Jersey
                    32        ... New Mexico
                    33        ... New York
                    34        ... North Carolina
                    35        ... North Dakota
                    36        ... Ohio
                    37        ... Oklahoma
                    38        ... Oregon
                    39        ... Pennsylvania
                    40        ... Rhode Island
                    41        ... South Carolina
                    42        ... South Dakota
                    43        ... Tennessee
                    44        ... Texas
                    45        ... Utah
                    46        ... Vermont
                    47        ... Virginia
                    48        ... Washington
                    49        ... West Virginia
                    50        ... Wisconsin
                    51        ... Wyoming



 18-20       3    CNTYNAT
                  County of Occurrence
                 ____________________

                    001-nnn   ... Counties and county equivalents (independent and
                                  coextensive cities) are numbered alphabetically
                                  within each State.  (Note:  To uniquely identify 
                                  a county, both the State and county codes must be 
                                  used.) A complete list
                                  of counties is shown in the Geographic Code Outline
                                  further back in this document.

                    999       ... County of less than 100,000 population


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 21-25       5    FIPSOCC
                  Federal Information Processing Standards (FIPS) Geographic Codes
                  (Occurrence)
                 ________________________________________________________________

                    Refer to the Geographic Code Outline further back in this 
                    document for a detailed list of areas and codes.  For an 
                    explanation of FIPS codes, reference should be made to 
                    various National Institute of Standards and Technology (NIST) 
                    publications.



 21-22       2    STOCCFIP
                  State of Occurrence (FIPS)
                 __________________________

                    01        ... Alabama
                    02        ... Alaska
                    04        ... Arizona
                    05        ... Arkansas
                    06        ... California
                    08        ... Colorado
                    09        ... Connecticut
                    10        ... Delaware
                    11        ... District of Columbia
                    12        ... Florida
                    13        ... Georgia
                    15        ... Hawaii
                    16        ... Idaho
                    17        ... Illinois
                    18        ... Indiana
                    19        ... Iowa
                    20        ... Kansas
                    21        ... Kentucky
                    22        ... Louisiana
                    23        ... Maine
                    24        ... Maryland
                    25        ... Massachusetts
                    26        ... Michigan
                    27        ... Minnesota
                    28        ... Mississippi
                    29        ... Missouri
                    30        ... Montana
                    31        ... Nebraska
                    32        ... Nevada
                    33        ... New Hampshire
                    34        ... New Jersey
                    35        ... New Mexico
                    36        ... New York
                    37        ... North Carolina
                    38        ... North Dakota
                    39        ... Ohio
                    40        ... Oklahoma
                    41        ... Oregon
                    42        ... Pennsylvania
                    44        ... Rhode Island
                    45        ... South Carolina
                    46        ... South Dakota
                    47        ... Tennessee
                    48        ... Texas
                    49        ... Utah
                    50        ... Vermont
                    51        ... Virginia
                    53        ... Washington
                    54        ... West Virginia
                    55        ... Wisconsin
                    56        ... Wyoming


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 23-25       3    CNTOCFIP
                  County of Occurrence (FIPS)
                 ___________________________

                    001-nnn   ... Counties and county equivalents (independent and
                                  coextensive cities) are numbered alphabetically
                                  within each State.  (Note:  To uniquely identify 
                                  a county, both the State and county codes must 
                                  be used.) A complete list of counties is shown in 
                                  the Geographic Code Outline further back in this document.

                    999       ... County of less than 100,000 population



 26          1    CNTOCPOP
                  Population Size of County of Occurrence
                 _______________________________________

                    Based on the results of the 1980 Census

                    0         ... County of 1,000,000 or more
                    1         ... County of   500,000 to 1,000,000
                    2         ... County of   250,000 to   500,000
                    3         ... County of   100,000 to   250,000
                    9         ... County of less than 100,000


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________

 27-58      32    NRESID
                  Place of Residence
                 __________________


 27-29       3    RDSCRES
                  Region, Division, and State Subcode of Residence
                 ________________________________________________


 27          1    REGNRES
                  Region of Residence
                 ___________________


 28          1    DIVRES
                  Division of Residence
                 _____________________


 29          1    STSUBRES
                  State Subcode of Residence
                 __________________________

                    States are coded within Division and the code structure 
                    is designed to sequence the States as they appear in NCHS 
                    publications.

                    000       ... Foreign Residents
                    1         ... NORTHEAST
                      1       ...   New England
                        1     ...     Maine
                        2     ...     New Hampshire
                        3     ...     Vermont
                        4     ...     Massachusetts
                        5     ...     Rhode Island
                        6     ...     Connecticut
                      2       ...   Middle Atlantic
                        1     ...     New York
                        2     ...     New Jersey
                        3     ...     Pennsylvania
                    2         ... MIDWEST
                      3       ...   East North Central
                        1     ...     Ohio
                        2     ...     Indiana
                        3     ...     Illinois
                        4     ...     Michigan
                        5     ...     Wisconsin
                      4       ...   West North Central
                        1     ...     Minnesota
                        2     ...     Iowa
                        3     ...     Missouri
                        4     ...     North Dakota
                        5     ...     South Dakota
                        6     ...     Nebraska
                        7     ...     Kansas
                    3         ... SOUTH
                      5       ...   South Atlantic
                        1     ...     Delaware
                        2     ...     Maryland
                        3     ...     District of Columbia
                        4     ...     Virginia
                        5     ...     West Virginia
                        6     ...     North Carolina
                        7     ...     South Carolina
                        8     ...     Georgia
                        9     ...     Florida
                      6       ...   East South Central
                        1     ...     Kentucky
                        2     ...     Tennessee
                        3     ...     Alabama
                        4     ...     Mississippi
                      7       ...   West South Central
                        1     ...     Arkansas
                        2     ...     Louisiana
                        3     ...     Oklahoma
                        4     ...     Texas

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 29          1    STSUBRES
                  Region, Division, and State Subcode of Residence (Continued)
                 ____________________________________________________________

                    4         ... WEST
                      8       ...   Mountain
                        1     ...     Montana
                        2     ...     Idaho
                        3     ...     Wyoming
                        4     ...     Colorado
                        5     ...     New Mexico
                        6     ...     Arizona
                        7     ...     Utah
                        8     ...     Nevada
                      9       ...   Pacific
                        1     ...     Washington
                        2     ...     Oregon
                        3     ...     California
                        4     ...     Alaska
                        5     ...     Hawaii

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 30-31       2    STRESEXP
                  Expanded State of Residence
                 ___________________________

                    This item is designed to separately identify 
                    New York city records from other New York State records.

                    01        ... Alabama
                    02        ... Alaska
                    03        ... Arizona
                    04        ... Arkansas
                    05        ... California
                    06        ... Colorado
                    07        ... Connecticut
                    08        ... Delaware
                    09        ... District of Columbia
                    10        ... Florida
                    11        ... Georgia
                    12        ... Hawaii
                    13        ... Idaho
                    14        ... Illinois
                    15        ... Indiana
                    16        ... Iowa
                    17        ... Kansas
                    18        ... Kentucky
                    19        ... Louisiana
                    20        ... Maine
                    21        ... Maryland
                    22        ... Massachusetts
                    23        ... Michigan
                    24        ... Minnesota
                    25        ... Mississippi
                    26        ... Missouri
                    27        ... Montana
                    28        ... Nebraska
                    29        ... Nevada
                    30        ... New Hampshire
                    31        ... New Jersey
                    32        ... New Mexico
                    33        ... New York
                    34        ... New York city
                    35        ... North Carolina
                    36        ... North Dakota
                    37        ... Ohio
                    38        ... Oklahoma
                    39        ... Oregon
                    40        ... Pennsylvania
                    41        ... Rhode Island
                    42        ... South Carolina
                    43        ... South Dakota
                    44        ... Tennessee
                    45        ... Texas
                    46        ... Utah
                    47        ... Vermont
                    48        ... Virginia
                    49        ... Washington
                    50        ... West Virginia
                    51        ... Wisconsin
                    52        ... Wyoming
                    53-58,60  ... Foreign residents
                    53        ...   Puerto Rico
                    54        ...   Virgin Islands
                    55        ...   Guam
                    56        ...   Canada
                    57        ...   Cuba
                    58        ...   Mexico
                    60        ...   Remainder of the World

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 32-33       2    STATERES
                  State of Residence
                 __________________

                    01        ... Alabama
                    02        ... Alaska
                    03        ... Arizona
                    04        ... Arkansas
                    05        ... California
                    06        ... Colorado
                    07        ... Connecticut
                    08        ... Delaware
                    09        ... District of Columbia
                    10        ... Florida
                    11        ... Georgia
                    12        ... Hawaii
                    13        ... Idaho
                    14        ... Illinois
                    15        ... Indiana
                    16        ... Iowa
                    17        ... Kansas
                    18        ... Kentucky
                    19        ... Louisiana
                    20        ... Maine
                    21        ... Maryland
                    22        ... Massachusetts
                    23        ... Michigan
                    24        ... Minnesota
                    25        ... Mississippi
                    26        ... Missouri
                    27        ... Montana
                    28        ... Nebraska
                    29        ... Nevada
                    30        ... New Hampshire
                    31        ... New Jersey
                    32        ... New Mexico
                    33        ... New York
                    34        ... North Carolina
                    35        ... North Dakota
                    36        ... Ohio
                    37        ... Oklahoma
                    38        ... Oregon
                    39        ... Pennsylvania
                    40        ... Rhode Island
                    41        ... South Carolina
                    42        ... South Dakota
                    43        ... Tennessee
                    44        ... Texas
                    45        ... Utah
                    46        ... Vermont
                    47        ... Virginia
                    48        ... Washington
                    49        ... West Virginia
                    50        ... Wisconsin
                    51        ... Wyoming
                    52-57,59  ... Foreign Residents
                    52        ...   Puerto Rico
                    53        ...   Virgin Islands
                    54        ...   Guam
                    55        ...   Canada
                    56        ...   Cuba
                    57        ...   Mexico
                    59        ...   Remainder of the World

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 34-36       3    CNTYRES
                  County of Residence
                 ___________________

                    A complete list of counties is shown in the Geographic 
                    Code Outline further back in this document.

                    001-nnn   ... Counties and county equivalents (independent and
                                  coextensive cities) are numbered alphabetically
                                  within each State.  (Note:  To uniquely identify 
                                  a county, both the State and county codes must be used.)
                    999       ... County of less than 100,000 population
                    ZZZ       ... Foreign residents



 37-39       3    CITYRES
                  City of Residence
                 _________________

                    A complete list of cities is shown in the Geographic Code Outline
                    further back in this document.

                    001-nnn   ... Cities are numbered alphabetically within each
                                  State and identify each city with a population of 
                                  100,000 or more in 1980.  (Note:  To uniquely identify 
                                  a city, both State and city codes must be used.  
                                  State, county and city
                                  codes may also be used.)
                    999       ... Balance of county
                    ZZZ       ... Foreign residents



 40          1    CITRSPOP
                  Population Size of City of Residence
                 ____________________________________

                    Based on the results of the 1980 census

                    0         ... Place of 1,000,000 or more
                    1         ... Place of   500,000 to 1,000,000
                    2         ... Place of   250,000 to   500,000
                    3         ... Place of   100,000 to   250,000
                    9         ... Place of less than 100,000
                    Z         ... Foreign residents



 41          1    METRORES
                  Metropolitan - Nonmetropolitan County of Residence
                 __________________________________________________

                    1         ... Metropolitan county
                    2         ... Nonmetropolitan county
                    Z         ... Foreign residents

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 42-57      16    FIPSRES
                  Federal Information Processing Standards (FIPS) 
                  Geographic Codes (Residence)
                 ________________________________________________________

                    Refer to the Geographic Code Outline further back in 
                    this document for a detailed list of areas and codes.  
                    For an explanation of FIPS codes, reference should be 
                    made to various National Institute of Standards and
                    Technology (NIST) publications.




 42-43       2    STRESFIP
                  State of Residence (FIPS)
                 _________________________

                    00        ... Foreign residents
                    01        ... Alabama
                    02        ... Alaska
                    04        ... Arizona
                    05        ... Arkansas
                    06        ... California
                    08        ... Colorado
                    09        ... Connecticut
                    10        ... Delaware
                    11        ... District of Columbia
                    12        ... Florida
                    13        ... Georgia
                    15        ... Hawaii
                    16        ... Idaho
                    17        ... Illinois
                    18        ... Indiana
                    19        ... Iowa
                    20        ... Kansas
                    21        ... Kentucky
                    22        ... Louisiana
                    23        ... Maine
                    24        ... Maryland
                    25        ... Massachusetts
                    26        ... Michigan
                    27        ... Minnesota
                    28        ... Mississippi
                    29        ... Missouri
                    30        ... Montana
                    31        ... Nebraska
                    32        ... Nevada
                    33        ... New Hampshire
                    34        ... New Jersey
                    35        ... New Mexico
                    36        ... New York
                    37        ... North Carolina
                    38        ... North Dakota
                    39        ... Ohio
                    40        ... Oklahoma
                    41        ... Oregon
                    42        ... Pennsylvania
                    44        ... Rhode Island
                    45        ... South Carolina
                    46        ... South Dakota
                    47        ... Tennessee
                    48        ... Texas
                    49        ... Utah
                    50        ... Vermont
                    51        ... Virginia
                    53        ... Washington
                    54        ... West Virginia
                    55        ... Wisconsin
                    56        ... Wyoming

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 44-46       3    CNTYRFIP
                  County of Residence (FIPS)
                 __________________________

                    001-nnn   ... Counties and county equivalents (independent and
                                  coextensive cities) are numbered alphabetically
                                  within each State.  (Note:  To uniquely identify 
                                  a county, both the State and county codes must 
                                  be used.)
                    999       ... County of less than 100,000 population
                    000       ... Foreign residents



 47-51       5    R1
                  Reserved Positions
                 __________________



 52-53       2    CMSA
                  CMSA of Residence (FIPS)
                 ________________________

                    Consolidated Metropolitan Statistical Areas are groupings of
                    certain Primary Metropolitan Statistical Areas and are 
                    defined by the U.S. Office of Management and Budget (OMB) 
                    as of June 30, 1990.

                    00        ... Not a CMSA
                    07        ... Boston - Lawrence-Salem, MA-NH
                    10        ... Buffalo - Niagara Falls, NY
                    14        ... Chicago - Gary-Lake County, IL-IN-WI
                    21        ... Cincinnati - Hamilton, OH-KY-IN
                    28        ... Cleveland - Akron-Lorain, OH
                    31        ... Dallas - Fort Worth, TX
                    34        ... Denver - Boulder, CO
                    35        ... Detroit - Ann Arbor, MI
                    41        ... Hartford - New Britain-Middletown, CT
                    42        ... Houston - Galveston-Brazoria, TX
                    49        ... Los Angeles -Anaheim-Riverside, CA
                    56        ... Miami - Fort Lauderdale, FL
                    63        ... Milwaukee - Racine, WI
                    70        ... New York -Northern New Jersey-Long Island, NY-NJ-CT
                    77        ... Philadelphia - Wilmington-Trenton, PA-NJ-DE-MD
                    78        ... Pittsburgh - Beaver Valley, PA
                    79        ... Portland - Vancouver, OR-WA
                    80        ... Providence - Pawtucket-Fall River, RI-MA
                    84        ... San Francisco -Oakland-San Jose, CA
                    91        ... Seattle - Tacoma, WA



 54-57       4    SMSARFIP
                  PMSA/MSA of Residence (FIPS)
                 ____________________________

                    Primary Metropolitan Statistical Areas and Metropolitan 
                    Statistical Areas are those defined by the U.S.  Office 
                    of Management and Budget as of June 30, 1990. For New England, 
                    the New England County Metropolitan Areas (NECMA's) are used.

                    Further back in this document is a list of PMSA's, MSA's, NECMA's,
                    and their component counties.

                    0000      ... Nonmetropolitan counties or foreign residents
                    0040-9360 ... Code range
                    9999      ... Area of less than 100,000 population

 
                                             1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 58          1    CNTRSPOP
                  Population Size of County of Residence
                 ______________________________________

                    Based on the results of the 1980 Census.

                    0         ... County of 1,000,000 or more
                    1         ... County of   500,000 to 1,000,000
                    2         ... County of   250,000 to   500,000
                    3         ... County of   100,000 to   250,000
                    9         ... County of less than 100,000
                    Z         ... Foreign resident



 59-67       9    RA
                  Reserved positions
                 __________________



 68          1    MAGERFLG
                  Reported Age of Mother Used Flag
                 ________________________________

                    This position is flagged whenever the mother's reported age in
                    years is used.  The reported age is used, if valid, when age 
                    derived from date of birth is not available or when it is 
                    outside the 10-49 code range.

                    Blank     ... Reported age is not used
                    1         ... Reported age is used



 69          1    MAGEIMP
                  Age of Mother Imputation Flag
                 _____________________________

                    Blank     ... Age is not imputed
                    1         ... Age is imputed



 70-71       2    DMAGE
                  Age of Mother
                 _____________

                    This item is:  a) computed using dates of birth of mother and
                    of child when available and if valid; b) reported and valid; 
                    or c) imputed.  
                    This is the age item used in NCHS publications.

                    10-49     ... Age in single years


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 72-73       2    MAGE36
                  Age of Mother Single Years Recode 36
                 ____________________________________

                    01        ... Under 15 years
                    02        ... 15 years
                    03        ... 16 years
                    04        ... 17 years
                    05        ... 18 years
                    06        ... 19 years
                    07        ... 20 years
                    08        ... 21 years
                    09        ... 22 years
                    10        ... 23 years
                    11        ... 24 years
                    12        ... 25 years
                    13        ... 26 years
                    14        ... 27 years
                    15        ... 28 years
                    16        ... 29 years
                    17        ... 30 years
                    18        ... 31 years
                    19        ... 32 years
                    20        ... 33 years
                    21        ... 34 years
                    22        ... 35 years
                    23        ... 36 years
                    24        ... 37 years
                    25        ... 38 years
                    26        ... 39 years
                    27        ... 40 years
                    28        ... 41 years
                    29        ... 42 years
                    30        ... 43 years
                    31        ... 44 years
                    32        ... 45 years
                    33        ... 46 years
                    34        ... 47 years
                    35        ... 48 years
                    36        ... 49 years


 74-75       2    MAGE12
                  Age of Mother Recode 12
                 _______________________

                    01        ... Under 15 years
                    03        ... 15 years
                    04        ... 16 years
                    05        ... 17 years
                    06        ... 18 years
                    07        ... 19 years
                    08        ... 20 - 24 years
                    09        ... 25 - 29 years
                    10        ... 30 - 34 years
                    11        ... 35 - 39 years
                    12        ... 40 - 44 years
                    13        ... 45 - 49 years



 76          1    MAGE8
                  Age of Mother Recode 8
                 ______________________

                    1         ... Under 15 years
                    2         ... 15 - 19 years
                    3         ... 20 - 24 years
                    4         ... 25 - 29 years
                    5         ... 30 - 34 years
                    6         ... 35 - 39 years
                    7         ... 40 - 44 years
                    8         ... 45 - 49 years


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 77          1    ORMOTH
                  Hispanic Origin of Mother
                 _________________________

                    Origin is not reported by all areas.  See reporting flags.

                    0         ... Non - Hispanic
                    1         ... Mexican
                    2         ... Puerto Rican
                    3         ... Cuban
                    4         ... Central or South American
                    5         ... Other and unknown Hispanic
                    9         ... Origin unknown or not stated



 78          1    ORRACEM
                  Hispanic Origin and Race of Mother Recode
                 _________________________________________

                    Origin is not reported by all areas.  See reporting flags.

                    1         ... Mexican
                    2         ... Puerto Rican
                    3         ... Cuban
                    4         ... Central or South American
                    5         ... Other and unknown Hispanic
                    6         ... Non - Hispanic White
                    7         ... Non - Hispanic Black
                    8         ... Non - Hispanic other races
                    9         ... Origin unknown or not stated



 79          1    MRACEIMP
                  Race of Mother Imputation Flag
                 ______________________________

                    Blank     ... Race is not imputed
                    1         ... Race is imputed



 80-81       2    MRACE
                  Race of Mother
                 ______________

                    Race codes effective with 1989 data differ from previous years.

                    01        ... White
                    02        ... Black
                    03        ... American Indian (includes Aleuts and Eskimos)
                    04        ... Chinese
                    05        ... Japanese
                    06        ... Hawaiian (includes Part-Hawaiian)
                    07        ... Filipino
                    08        ... Other Asian or Pacific Islander
                    09        ... All other races



 82          1    MRACE3
                  Race of Mother Recode
                 _____________________

                    1         ... White
                    2         ... Races other than White or Black
                    3         ... Black


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 83-84       2    DMEDUC
                  Education of Mother Detail
                 __________________________

                    Education is not reported by all areas.  See reporting flags.

                    00        ... No formal education
                    01-08     ... Years of elementary school
                    09        ... 1 year of high school
                    10        ... 2 years of high school
                    11        ... 3 years of high school
                    12        ... 4 years of high school
                    13        ... 1 year of college
                    14        ... 2 years of college
                    15        ... 3 years of college
                    16        ... 4 years of college
                    17        ... 5 or more years of college
                    99        ... Not stated



 85          1    MEDUC6
                  Education of Mother Recode
                 __________________________

                    Education is not reported by all areas.  See reporting flags.

                    1         ... 0 - 8 years
                    2         ... 9 - 11 years
                    3         ... 12 years
                    4         ... 13 - 15 years
                    5         ... 16 years and over
                    6         ... Not stated



 86          1    DMARIMP
                  Marital Status of Mother Imputation Flag
                 ________________________________________

                    Blank     ... Marital Status is not imputed
                    1         ... Marital Status is imputed



 87          1    DMAR
                  Marital Status of Mother
                 ________________________

                    1         ... Married
                    2         ... Unmarried


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 88-89       2    MPLBIR
                  Place of Birth of Mother
                 ________________________

                    01        ... Alabama
                    02        ... Alaska
                    03        ... Arizona
                    04        ... Arkansas
                    05        ... California
                    06        ... Colorado
                    07        ... Connecticut
                    08        ... Delaware
                    09        ... District of Columbia
                    10        ... Florida
                    11        ... Georgia
                    12        ... Hawaii
                    13        ... Idaho
                    14        ... Illinois
                    15        ... Indiana
                    16        ... Iowa
                    17        ... Kansas
                    18        ... Kentucky
                    19        ... Louisiana
                    20        ... Maine
                    21        ... Maryland
                    22        ... Massachusetts
                    23        ... Michigan
                    24        ... Minnesota
                    25        ... Mississippi
                    26        ... Missouri
                    27        ... Montana
                    28        ... Nebraska
                    29        ... Nevada
                    30        ... New Hampshire
                    31        ... New Jersey
                    32        ... New Mexico
                    33        ... New York
                    34        ... North Carolina
                    35        ... North Dakota
                    36        ... Ohio
                    37        ... Oklahoma
                    38        ... Oregon
                    39        ... Pennsylvania
                    40        ... Rhode Island
                    41        ... South Carolina
                    42        ... South Dakota
                    43        ... Tennessee
                    44        ... Texas
                    45        ... Utah
                    46        ... Vermont
                    47        ... Virginia
                    48        ... Washington
                    49        ... West Virginia
                    50        ... Wisconsin
                    51        ... Wyoming
                    52        ... Puerto Rico
                    53        ... Virgin Islands
                    54        ... Guam
                    55        ... Canada
                    56        ... Cuba
                    57        ... Mexico
                    59        ... Remainder of the World
                    99        ... Not classifiable



 90          1    MPLBIRR
                  Place of Birth of Mother Recode
                 _______________________________

                    1         ... Native born
                    2         ... Foreign born
                    3         ... Unknown or not stated


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 91-92       2    DMAGERPT
                  Reported Age of Mother
                 ______________________

                    10-49     ... Age in single years
                    99        ... Unknown or not stated



 93          1    ADEQUACY
                  Adequacy Of Care Recode (Kessner Index)
                 _______________________________________

                    This recode is based on a modified Kessner criterion.  Month
                    Prenatal Care Began, Number of Prenatal Visits, and Gestation 
                    are the items used to generate this recode.

                    1         ... Adequate
                    2         ... Intermediate
                    3         ... Inadequate
                    4         ... Unknown



 94-95       2    NLBNL
                  Number of Live Births, Now Living
                 _________________________________

                    Does not include this birth or adoptions.

                    00-30     ... Stated number of births
                    99        ... Unknown or not stated



 96-97       2    NLBND
                  Number of Live Births, Now Dead
                 _______________________________

                    Does not include this birth or adoptions.

                    00-30     ... Stated number of births
                    99        ... Unknown or not stated



 98-99       2    NOTERM
                  Number of Other Terminations
                 ____________________________

                    Includes spontaneous and induced at any time after conception.

                    00-30     ... Stated number of other terminations
                    99        ... Unknown or not stated



 100-101     2    DLIVORD
                  Detail Live Birth Order
                 _______________________

                    Sum of live births now living and now dead plus one.  
                    If either item is unknown, this item is made unknown.

                    00-31     ... Number of children born alive to mother
                    99        ... Unknown

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 102         1    LIVORD9
                  Live Birth Order Recode
                 _______________________

                    1         ... First Child
                    2         ... Second Child
                    3         ... Third Child
                    4         ... Fourth Child
                    5         ... Fifth Child
                    6         ... Sixth Child
                    7         ... Seventh Child
                    8         ... Eighth Child and over
                    9         ... Unknown or not stated



 103-104     2    DTOTORD
                  Detail Total Birth Order
                 ________________________

                    Sum of live birth order and other terminations.  
                    If either item is unknown, this item is made unknown.

                    01-40     ... Total number of live births and other terminations
                    99        ... Unknown



 105         1    TOTORD9
                  Total Birth Order Recode
                 ________________________

                    1         ... First Child
                    2         ... Second Child
                    3         ... Third Child
                    4         ... Fourth Child
                    5         ... Fifth Child
                    6         ... Sixth Child
                    7         ... Seventh Child
                    8         ... Eighth Child and over
                    9         ... Unknown or not stated



 106-107     2    MONPRE
                  Detail Month of Pregnancy Prenatal Care Began
                 _____________________________________________

                    00        ... No prenatal care
                    01        ... 1st month
                    02        ... 2nd month
                    03        ... 3rd month
                    04        ... 4th month
                    05        ... 5th month
                    06        ... 6th month
                    07        ... 7th month
                    08        ... 8th month
                    09        ... 9th month
                    99        ... Unknown or not stated



 108         1    MPRE6
                  Month Prenatal Care Began Recode 6
                 __________________________________

                    1         ... 1st - 2nd month
                    2         ... 3rd month
                    3         ... 4th - 6th month
                    4         ... 7th - 9th month
                    5         ... No prenatal care
                    6         ... Unknown or not stated


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 109         1    MPRE5
                  Month Prenatal Care Began Recode 5
                 __________________________________

                    1         ... 1st Trimester (1st-3rd month)
                    2         ... 2nd Trimester (4th-6th month)
                    3         ... 3rd Trimester (7th-9th month)
                    4         ... No Prenatal Care
                    5         ... Unknown or not stated



 110-111     2    NPREVIST
                  Total Number of Prenatal Visits
                 _______________________________

                    00        ... No prenatal visits
                    01-48     ... Stated number of visits
                    49        ... 49 or more visits
                    99        ... Unknown or not stated



 112-113     2    NPREV12
                  Number of Prenatal Visits Recode
                 ________________________________

                    01        ... No visits
                    02        ... 1 - 2 visits
                    03        ... 3 - 4 visits
                    04        ... 5 - 6 visits
                    05        ... 7 - 8 visits
                    06        ... 9 - 10 visits
                    07        ... 11 - 12 visits
                    08        ... 13 - 14 visits
                    09        ... 15 - 16 visits
                    10        ... 17 - 18 visits
                    11        ... 19 visits or more
                    12        ... Unknown or not stated number of visits

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 114-121     8    LMPDATE
                  Date Last Normal Menses Began
                 _____________________________



 114-115     2    LMPMON
                  Month Last Normal Menses Began
                 ______________________________

                    01        ... January
                    02        ... February
                    03        ... March
                    04        ... April
                    05        ... May
                    06        ... June
                    07        ... July
                    08        ... August
                    09        ... September
                    10        ... October
                    11        ... November
                    12        ... December
                    99        ... Unknown or not stated month of LMP



 116-117     2    LMPDAY
                  Day Last Normal Menses Began
                 ____________________________

                    01-31     ... As applicable to month of LMP
                    99        ... Unknown or not stated day of LMP



 118-121     4    LMPYR
                  Year Last Normal Menses Began
                 _____________________________

                    1990      ... 1990
                    1991      ... 1991
                    9999      ... Unknown or not stated year of LMP



 122-127     6    LLBDATE
                  Date of Last Live Birth
                 _______________________

                    777777    ... No previous live birth



 122-123     2    LLBMON
                  Month of Last Live Birth
                 ________________________

                    01        ... January
                    02        ... February
                    03        ... March
                    04        ... April
                    05        ... May
                    06        ... June
                    07        ... July
                    08        ... August
                    09        ... September
                    10        ... October
                    11        ... November
                    12        ... December
                    99        ... Unknown or not stated


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 124-127     4    LLBYR
                  Year of Last Live Birth
                 _______________________

                    1900-1991 ... Code range
                    9999      ... Unknown or not stated



 128-130     3    DISLLB
                  Interval Since Last Live Birth
                 ______________________________

                    This item is computed from date of birth of this 
                    child and date of last live birth.

                    777       ... No previous live birth
                    000       ... Zero months (plural birth)
                    001-468   ... One to four hundred sixty-eight months
                    999       ... Unknown



 131-132     2    ISLLB10
                  Interval Since Last Live Birth Recode
                 _____________________________________

                    00        ... Not applicable (no previous live birth)
                    01        ... Zero months (plural birth)
                    02        ... 1 - 11 months
                    03        ... 12 - 17 months
                    04        ... 18 - 23 months
                    05        ... 24 - 35 months
                    06        ... 36 - 47 months
                    07        ... 48 - 59 months
                    08        ... 60 - 71 months
                    09        ... 72 months and over
                    10        ... Unknown



 133-152    20    R2
                  Reserved Positions
                 __________________



 153         1    FAGERFLG
                  Reported Age of Father Used Flag
                 ________________________________

                    This position is flagged whenever the father's reported 
                    age in years is used.  The reported age is used, if valid, 
                    when age derived from date of birth is not available or 
                    when it is less than 10.

                    Blank     ... Reported age is not used
                    1         ... Reported age is used



 154-155     2    DFAGE
                  Age of Father
                 _____________

                    This item is either computed from date of birth of father and
                    of child or is the reported age.  This is the age item used in 
                    NCHS publications.

                    10-98     ... Age in single years
                    99        ... Unknown or not stated


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 156-157     2    FAGE11
                  Age of Father Recode
                 ____________________

                    01        ... Under 15 years
                    02        ... 15 - 19 years
                    03        ... 20 - 24 years
                    04        ... 25 - 29 years
                    05        ... 30 - 34 years
                    06        ... 35 - 39 years
                    07        ... 40 - 44 years
                    08        ... 45 - 49 years
                    09        ... 50 - 54 years
                    10        ... 55 - 98 years
                    11        ... Not stated



 158         1    ORFATH
                  Hispanic Origin of Father
                 _________________________

                    Origin of father is not reported by all areas.  
                    See reporting flags.

                    0         ... Non - Hispanic
                    1         ... Mexican
                    2         ... Puerto Rican
                    3         ... Cuban
                    4         ... Central or South American
                    5         ... Other and unknown Hispanic
                    9         ... Origin unknown or not stated



 159         1    ORRACEF
                  Hispanic Origin and Race of Father Recode
                 _________________________________________

                    Origin of father is not reported by all areas.  
                    See reporting flags.

                    1         ... Mexican
                    2         ... Puerto Rican
                    3         ... Cuban
                    4         ... Central or South American
                    5         ... Other and unknown Hispanic
                    6         ... Non - Hispanic White
                    7         ... Non - Hispanic Black
                    8         ... Non - Hispanic other or unknown race
                    9         ... Origin unknown or not stated



 160-161     2    FRACE
                  Race of Father
                 ______________

                    Race codes effective with 1989 data differ from previous years.

                    01        ... White
                    02        ... Black
                    03        ... American Indian (includes Aleuts and Eskimos)
                    04        ... Chinese
                    05        ... Japanese
                    06        ... Hawaiian (includes Part-Hawaiian)
                    07        ... Filipino
                    08        ... Other Asian or Pacific Islander
                    09        ... All other races
                    99        ... Unknown or not stated

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 162         1    FRACE4
                  Race of Father Recode
                 _____________________

                    1         ... White
                    2         ... Races other than White, Black, or unknown
                    3         ... Black
                    4         ... Unknown or not stated



 163-164     2    DFEDUC
                  Education of Father Detail
                 __________________________

                    Education of father is not reported by all areas.  See reporting
flags

                    00        ... No formal education
                    01-08     ... Years of elementary school
                    09        ... 1 year of high school
                    10        ... 2 years of high school
                    11        ... 3 years of high school
                    12        ... 4 years of high school
                    13        ... 1 year of college
                    14        ... 2 years of college
                    15        ... 3 years of college
                    16        ... 4 years of college
                    17        ... 5 or more years of college
                    99        ... Not stated



 165         1    FEDUC6
                  Education of Father Recode
                 __________________________

                    Education of father is not reported by all areas.  
                    See reporting flags

                    1         ... 0 - 8 years
                    2         ... 9 - 11 years
                    3         ... 12 years
                    4         ... 13 - 15 years
                    5         ... 16 years and over
                    6         ... Not stated



 166-167     2    DFAGERPT
                  Reported Age of Father
                 ______________________

                    10-98     ... Age in single years
                    99        ... Unknown or not stated



 168-169     2    R3
                  Reserved Positions
                 __________________



 170         1    CDOBMIMP
                  Month of Birth of Child Imputation Flag
                 _______________________________________

                    Blank     ... Month is not imputed
                    1         ... Month is imputed



 171         1    RB
                  Reserved Position
                 _________________


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________


 172-173     2    BIRMON
                  Month of Birth
                 ______________

                    01        ... January
                    02        ... February
                    03        ... March
                    04        ... April
                    05        ... May
                    06        ... June
                    07        ... July
                    08        ... August
                    09        ... September
                    10        ... October
                    11        ... November
                    12        ... December



 174-175     2    RC
                  Reserved Positions
                 __________________



 176-179     4    BIRYR
                  Year of Birth
                 _____________

                    1991      ... 1991



 180         1    WEEKDAY
                  Day of Week Child Born
                 ______________________

                    1         ... Sunday
                    2         ... Monday
                    3         ... Tuesday
                    4         ... Wednesday
                    5         ... Thursday
                    6         ... Friday
                    7         ... Saturday



 181         1    GESTESTM
                  Clinical Estimate of Gestation Used Flag
                 ________________________________________

                    This position is flagged whenever the clinical estimate 
                    of gestation is used.  It is used when gestation could 
                    not be computed or when the computed gestation is outside 
                    the 17-47 code range.

                    Blank     ... Clinical Estimate is not used
                    1         ... Clinical Estimate is used



 182         1    GESTIMP
                  Gestation Imputation Flag
                 _________________________

                    Blank     ... Gestation is not imputed
                    1         ... Gestation is imputed

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 183-184     2    DGESTAT
                  Gestation - Detail in Weeks
                 ___________________________

                    This item is:  a) computed using dates of birth of child 
                    and last normal menses; b) imputed from LMP date; c) the 
                    clinical estimate; or d) unknown when there is insufficient 
                    data to impute or no valid clinical estimate.  This is the 
                    gestation item used in NCHS publications.

                    17-47     ... 17th through 47th week of gestation
                    99        ... Unknown



 185-186     2    GESTAT10
                  Gestation Recode 10
                 ___________________

                    01        ... Under 20 weeks
                    02        ... 20 - 27 weeks
                    03        ... 28 - 31 weeks
                    04        ... 32 - 35 weeks
                    05        ... 36 weeks
                    06        ... 37 - 39 weeks
                    07        ... 40 weeks
                    08        ... 41 weeks
                    09        ... 42 weeks and over
                    10        ... Not stated



 187         1    GESTAT3
                  Gestation Recode 3
                 __________________

                    1         ... Under 37 weeks
                    2         ... 37 weeks and over
                    3         ... Not stated



 188         1    CSEXIMP
                  Sex Imputation Flag
                 ___________________

                    Blank     ... Sex is not imputed
                    1         ... Sex is imputed



 189         1    CSEX
                  Sex
                 ___

                    1         ... Male
                    2         ... Female



 190-191     2    CRACE
                  Race of Child
                 _____________

                    Race codes effective with 1989 data differ from previous years.

                    01        ... White
                    02        ... Black
                    03        ... American Indian (includes Aleuts and Eskimos)
                    04        ... Chinese
                    05        ... Japanese
                    06        ... Hawaiian (includes Part-Hawaiian)
                    07        ... Filipino
                    08        ... Other Asian or Pacific Islander
                    09        ... All other races

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 192         1    CRACE3
                  Race of Child Recode
                 ____________________

                    1         ... White
                    2         ... Races other than white or black
                    3         ... Black



 193-196     4    DBIRWT
                  Birth Weight - Detail in Grams
                 ______________________________

                    0227-8165 ... Number of grams
                    9999      ... Not stated birth weight



 197-198     2    BIRWT12
                  Birth Weight Recode 12
                 ______________________

                    01        ... 499 grams or less
                    02        ... 500 - 999 grams
                    03        ... 1000 - 1499 grams
                    04        ... 1500 - 1999 grams
                    05        ... 2000 - 2499 grams
                    06        ... 2500 - 2999 grams
                    07        ... 3000 - 3499 grams
                    08        ... 3500 - 3999 grams
                    09        ... 4000 - 4499 grams
                    10        ... 4500 - 4999 grams
                    11        ... 5000 - 8165 grams
                    12        ... Not stated



 199         1    BIRWT4
                  Birth Weight Recode 4
                 _____________________

                    1         ... 1499 grams or less
                    2         ... 1500 - 2499 grams
                    3         ... 2500 - grams or more
                    4         ... Unknown or not stated



 200         1    PLURIMP
                  Plurality Imputation Flag
                 _________________________

                    Blank     ... Plurality is not imputed
                    1         ... Plurality is imputed



 201         1    DPLURAL
                  Plurality
                 _________

                    1         ... Single
                    2         ... Twin
                    3         ... Triplet
                    4         ... Quadruplet
                    5         ... Quintuplet or higher



 202-203     2    OMAPS
                  One Minute Apgar Score
                 ______________________

                    Apgar Score is not reported by all areas.  See reporting flags.

                    00-10     ... A score of 0-10
                    99        ... Unknown or not stated

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 204         1    OMAPSR
                  One Minute Apgar Score Recode
                 _____________________________

                    Apgar Score is not reported by all areas.  See reporting flags.

                    1         ... A score of 0-3
                    2         ... A score of 4-6
                    3         ... A score of 7-8
                    4         ... A score of 9-10
                    5         ... Not stated



 205-206     2    FMAPS
                  Five Minute Apgar Score
                 _______________________

                    Apgar Score is not reported by all areas.  
                    See reporting flags.

                    00-10     ... A score of 0-10
                    99        ... Unknown or not stated



 207         1    FMAPSR
                  Five Minute Apgar Score Recode
                 ______________________________

                    Apgar Score is not reported by all areas.  
                    See reporting flags.

                    1         ... A score of 0-3
                    2         ... A score of 4-6
                    3         ... A score of 7-8
                    4         ... A score of 9-10
                    5         ... Not stated



 208-209     2    CLINGEST
                  Clinical Estimate of Gestation
                 ______________________________

                    Clinical estimate is not reported by all areas.  
                    See reporting flags.

                    17-47     ... Estimated gestation in weeks
                    99        ... Unknown or not stated



 210-216     7    R4
                  Reserved Positions
                 __________________


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________


 217-306    90    MEDINFO
                  Medical and Health Data
                 _______________________

                    Some States do not report an entire item while other States do
                    not report all of the categories within an item.

                    If an item is not reported, it is indicated by code zero in the
                    appropriate reporting flag.

                    If a category within an item is not reported it is indicated
                    by code 8 in the position for that category.




 217-222     6    DELMETH
                  Method of Delivery
                 __________________

                    Each method is assigned a separate position, and the code 
                    structure for each method (position) is:

                    1         ... The method was used
                    2         ... The method was not used
                    8         ... Method not on certificate
                    9         ... Method unknown or not stated



 217         1    VAGINAL
                  Vaginal
                 _______



 218         1    VBAC
                  Vaginal birth after previous C-section
                 ______________________________________



 219         1    PRIMAC
                  Primary C -section
                 __________________



 220         1    REPEAC
                  Repeat C -section
                 _________________



 221         1    FORCEP
                  Forceps
                 _______



 222         1    VACUUM
                  Vacuum
                 ______



 223         1    R5
                  Reserved Position
                 _________________



 224         1    DELMETH5
                  Method of Delivery Recode
                 _________________________

                    1         ... Vaginal (excludes vaginal after previous C-section)
                    2         ... Vaginal birth after previous C-section
                    3         ... Primary C -section
                    4         ... Repeat C -section
                    5         ... Not stated

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 225-241    17    MEDRISK
                  Medical Risk Factors
                 ____________________

                    Each risk factor is assigned a separate position, and the code
                    structure for each risk factor (position) is:

                    1         ... Factor reported
                    2         ... Factor not reported
                    8         ... Factor not on certificate
                    9         ... Factor not classifiable



 225         1    ANEMIA
                  Anemia (Hct.<30/Hgb.<10)
                 ________________________



 226         1    CARDIAC
                  Cardiac disease
                 _______________



 227         1    LUNG
                  Acute or chronic lung disease
                 _____________________________



 228         1    DIABETES
                  Diabetes
                 ________



 229         1    HERPES
                  Genital herpes
                 ______________



 230         1    HYDRA
                  Hydramnios/Oligohydramnios
                 __________________________



 231         1    HEMO
                  Hemoglobinopathy
                 ________________



 232         1    CHYPER
                  Hypertension, chronic
                 _____________________



 233         1    PHYPER
                  Hypertension, pregnancy-associated
                 __________________________________



 234         1    ECLAMP
                  Eclampsia
                 _________



 235         1    INCERVIX
                  Incompetent cervix
                 __________________



 236         1    PRE4000
                  Previous infant 4000 grams
                 ___________________________


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________


 237         1    PRETERM
                  Previous preterm or small-for-gestational-age infant
                 ____________________________________________________



 238         1    RENAL
                  Renal disease
                 _____________



 239         1    RH
                  Rh sensitization
                 ________________



 240         1    UTERINE
                  Uterine bleeding
                 ________________



 241         1    OTHERMR
                  Other Medical Risk Factors
                 __________________________



 242-252    11    OTHERRSK
                  Other Risk Factors for this Pregnancy
                 _____________________________________



 242-245     4    TOBACRSK
                  Tobacco Risks
                 _____________



 242         1    TOBACCO
                  Tobacco Use During Pregnancy
                 ____________________________

                    1         ... Yes
                    2         ... No
                    9         ... Unknown or not stated



 243-244     2    CIGAR
                  Average Number of Cigarettes Per Day
                 ____________________________________

                    00-97     ... As stated
                    98        ... 98 or more cigarettes per day
                    99        ... Unknown or not stated



 245         1    CIGAR6
                  Average Number of Cigarettes Per Day Recode
                 ___________________________________________

                    0         ... Nonsmoker
                    1         ... 1 - 5 cigarettes per day
                    2         ... 6 - 10 cigarettes per day
                    3         ... 11 - 20 cigarettes per day
                    4         ... 21 - 40 cigarettes per day
                    5         ... 41 or more cigarettes per day
                    6         ... Unknown or not stated

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 246-249     4    ALCOHRSK
                  Alcohol
                 _______



 246         1    ALCOHOL
                  Alcohol Use During Pregnancy
                 ____________________________

                    1         ... Yes
                    2         ... No
                    9         ... Unknown or not stated



 247-248     2    DRINK
                  Average Number of Drinks Per Week
                 _________________________________

                    00-97     ... As stated
                    98        ... 98 or more drinks per week
                    99        ... Unknown or not stated



 249         1    DRINK5
                  Average Number of Drinks Per Week Recode
                 ________________________________________

                    0         ... Non drinker
                    1         ... 1 drink per week
                    2         ... 2 drinks per week
                    3         ... 3 - 4 drinks per week
                    4         ... 5 or more drinks per week
                    5         ... Unknown or not stated



 250-252     3    WTGANRSK
                  Weight Gain During Pregnancy
                 ____________________________



 250-251     2    WTGAIN
                  Weight Gain
                 ___________

                    00-97     ... Stated number of pounds
                    98        ... 98 pounds or more
                    99        ... Unknown or not stated



 252         1    WTGAIN9
                  Weight Gain Recode
                 __________________

                    1         ... Less than 16 pounds
                    2         ... 16 - 20 pounds
                    3         ... 21 - 25 pounds
                    4         ... 26 - 30 pounds
                    5         ... 31 - 35 pounds
                    6         ... 36 - 40 pounds
                    7         ... 41 - 45 pounds
                    8         ... 46 or more pounds
                    9         ... Unknown or not stated

                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________



 253-259     7    OBSTETRC
                  Obstetric Procedures
                 ____________________

                    Each procedure is assigned a separate position, 
                    and the code structure for each procedure (position) is:

                    1         ... Procedure reported
                    2         ... Procedure not reported
                    8         ... Procedure not on certificate
                    9         ... Procedure not classifiable



 253         1    AMNIO
                  Amniocentesis
                 _____________



 254         1    MONITOR
                  Electronic fetal monitoring
                 ___________________________



 255         1    INDUCT
                  Induction of labor
                 __________________



 256         1    STIMULA
                  Stimulation of labor
                 ____________________



 257         1    TOCOL
                  Tocolysis
                 _________



 258         1    ULTRAS
                  Ultrasound
                 __________



 259         1    OTHEROB
                  Other Obstetric Procedures
                 __________________________


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________


 260-275    16    LABOR
                  Complications of Labor and/or Delivery
                 ______________________________________

                    Each complication is assigned a separate position, and the code
                    structure for each complication (position) is:

                    1         ... Complication reported
                    2         ... Complication not reported
                    8         ... Complication not on certificate
                    9         ... Complication not classifiable



 260         1    FEBRILE
                  Febrile (>100 degrees F.  or 38 degrees C.)
                 ___________________________________________



 261         1    MECONIUM
                  Meconium, moderate/heavy
                 ________________________



 262         1    RUPTURE
                  Premature rupture of membrane (>12 hours)
                 _________________________________________



 263         1    ABRUPTIO
                  Abruptio placenta
                 _________________



 264         1    PREPLACE
                  Placenta previa
                 _______________



 265         1    EXCEBLD
                  Other excessive bleeding
                 ________________________



 266         1    SEIZURE
                  Seizures during labor
                 _____________________



 267         1    PRECIP
                  Precipitous labor (<3 hours)
                 ____________________________



 268         1    PROLONG
                  Prolonged labor (>20 hours)
                 ___________________________



 269         1    DYSFUNC
                  Dysfunctional labor
                 ___________________



 270         1    BREECH
                  Breech/Malpresentation
                 ______________________



 271         1    CEPHALO
                  Cephalopelvic disproportion
                 ___________________________


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________


 272         1    CORD
                  Cord prolapse
                 _____________



 273         1    ANESTHE
                  Anesthetic complications
                 ________________________



 274         1    DISTRESS
                  Fetal distress
                 ______________



 275         1    OTHERLB
                  Other Complication of Labor and/or Delivery
                 ___________________________________________


                                            1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________


 276-284     9    NEWBORN
                  Abnormal Conditions of the Newborn
                 __________________________________

                    Each condition is assigned a separate position, 
                    and the code structure for each condition (position) is:

                    1         ... Condition reported
                    2         ... Condition not reported
                    8         ... Condition not on certificate
                    9         ... Condition not classifiable



 276         1    NANEMIA
                  Anemia (Hct.<39/Hgb.<13)
                 ________________________



 277         1    INJURY
                  Birth injury
                 ____________



 278         1    ALCOSYN
                  Fetal alcohol syndrome
                 ______________________



 279         1    HYALINE
                  Hyaline membrane disease
                 ________________________



 280         1    MECONSYN
                  Meconium aspiration syndrome
                 ____________________________



 281         1    VENL30
                  Assisted ventilation, less than 30 minutes
                 __________________________________________



 282         1    VEN30M
                  Assisted ventilation, 30 minutes or more
                 ________________________________________



 283         1    NSEIZ
                  Seizures
                 ________



 284         1    OTHERAB
                  Other Abnormal Conditions of the Newborn
                 ________________________________________


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________


 285-306    22    CONGENIT
                  Congenital Anomalies
                 ____________________

                    Each anomaly is assigned a separate position, and the code structure
                    for each anomaly (position) is:

                    1         ... Anomaly reported
                    2         ... Anomaly not reported
                    8         ... Anomaly not on certificate
                    9         ... Anomaly not classifiable



 285         1    ANEN
                  Anencephalus
                 ____________



 286         1    SPINA
                  Spina bifida/Meningocele
                 ________________________



 287         1    HYDRO
                  Hydrocephalus
                 _____________



 288         1    MICROCE
                  Microcephalus
                 _____________



 289         1    NERVOUS
                  Other central nervous system anomalies
                 ______________________________________



 290         1    HEART
                  Heart malformations
                 ___________________



 291         1    CIRCUL
                  Other circulatory/respiratory anomalies
                 _______________________________________



 292         1    RECTAL
                  Rectal atresia/stenosis
                 _______________________



 293         1    TRACHEO
                  Tracheo - esophageal fistula/Esophageal atresia
                 _______________________________________________



 294         1    OMPHALO
                  Omphalocele/Gastroschisis
                 _________________________



 295         1    GASTRO
                  Other gastrointestinal anomalies
                 ________________________________



 296         1    GENITAL
                  Malformed genitalia
                 ___________________


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________


 297         1    RENALAGE
                  Renal agenesis
                 ______________



 298         1    UROGEN
                  Other urogenital anomalies
                 __________________________



 299         1    CLEFTLP
                  Cleft lip/palate
                 ________________



 300         1    ADACTYLY
                  Polydactyly/Syndactyly/Adactyly
                 _______________________________



 301         1    CLUBFOOT
                  Club foot
                 _________



 302         1    HERNIA
                  Diaphragmatic hernia
                 ____________________



 303         1    MUSCULO
                  Other musculoskeletal/integumental anomalies
                 ____________________________________________



 304         1    DOWNS
                  Down's syndrome
                 _______________



 305         1    CHROMO
                  Other chromosomal anomalies
                 ___________________________



 306         1    OTHERCON
                  Other Congenital Anomalies
                 __________________________


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________

 307-326    20    FLRES
                  Reporting Flags for Place of Residence
                 ______________________________________

                    These positions contain flags to indicate whether or 
                    not the specified item is included on the birth certificate 
                    of the State of residence or of the MSA of residence.  
                    The code structure for each flag (position) is:

                    0         ... The item is not reported
                    1         ... The item is reported or partially reported.


 307         1    ORIGM
                  Origin of mother
                 ________________


 308         1    ORIGF
                  Origin of father
                 ________________


 309         1    EDUCM
                  Education of mother
                 ___________________


 310         1    EDUCF
                  Education of father
                 ___________________


 311         1    GESTE
                  Clinical estimate of gestation
                 ______________________________


 312         1    OMAPSRF
                  1 - minute Apgar score
                 ______________________


 313         1    FMAPSRF
                  5 - minute Apgar score
                 ______________________


 314         1    DELMETRF
                  Method of delivery
                 __________________


 315         1    MEDRSK
                  Medical risk factors
                 ____________________


 316         1    TOBUSE
                  Tobacco use
                 ___________


 317         1    ALCUSE
                  Alcohol use
                 ___________


 318         1    WTGN
                  Weight gain
                 ___________


 319         1    OBSTRC
                  Obstetric procedures
                 ____________________


 320         1    CLABOR
                  Complications of labor and/or delivery
                 ______________________________________


 321         1    ABNML
                  Abnormal conditions of newborn
                 ______________________________


                                              1991
                                     Detail Natality Record
 Tape      Field
 Location  Size   Item and Code Outline
________  _____  _____________________

 322         1    CONGAN
                  Congenital anomalies
                 ____________________


 323         1    R5
                  Reserved Positions
                 __________________


 324         1    EDUCSMSA
                  Education of Mother (Based on MSA)
                 __________________________________


 325-346    22    R6
                  Reserved positions
                 __________________


 347-349     3    SMSARES
                  PMSA/MSA of Residence (NCHS)
                 ____________________________

                    Primary Metropolitan Statistical Areas and Metropolitan 
                    Statistical Areas are those defined by the U.S.  Office 
                    of Management and Budget (OMB) as of June 30, 1990.  For 
                    New England, the New England County Metropolitan Areas 
                    (NECMA's) are used.

                    Further back in this document is a list of PMSA's, MSA's, 
                    NECMA's, and their component counties.

                    000       ... Nonmetropolitan counties
                    001-320   ... Code range
                    999       ... Area of less than 100,000 population
                    ZZZ       ... Foreign residents


 350         1    POPSMAS
                  PMSA/MSA Population Size
                 ________________________

                    Based on 1990 Census county population counts

                    1         ... Area of 250,000 or more
                    2         ... Area of 100,000 to 250,000
                    9         ... Area of less than 100,000 or nonmetropolitan area
                    Z         ... Foreign resident

                                          
  



This page last reviewed: Thursday, January 28, 2016
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