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Scientific Data Documentation
Near and Distant Vision Data (1971-75)
DSN: CC37.HANES1.VISION ABSTRACT GENERAL INFORMATION HEALTH AND NUTRITION EXAMINATION SURVEY, 1971-1975 Contents HANES 1971-1975 Description of Survey Target Population Data Collection Use of HANES Data Errors in the Data Sets and Survey Differences Variance Estimation General Notes Demographic Data Demographic Data Summary Record Layout Demographic Data Detailed Notes Demographic Data DESCRIPTION OF SURVEY Description of Survey: A detailed description of the design, content and operation of HANES I is provided in the following reports: Plan and Operation of the Health and Nutrition Examination Survey, DHEW Pub. No. (HSM) 73-1310, Series 1, Nos. 10a and 10b, Public Health Service, Washington, D. C., U. S. Government Printing Office, February 1973. Also provided is a draft report on the augmentation survey of adults describing the relevant field work conducted between July 1974 and October 1975. TARGET POPULATION Target Population: HANES I was conducted on a nationwide probability sample of approximately 32,000 persons, ages 1-74 years, from the civilian, noninstitutionalized population of the coterminous United States, excepting those persons residing on Indian reservations. The survey started in April 1971 and for many survey components was completed in June 1974. The HANES I sample was selected so that certain population groups thought to be at high risk of malnutrition (persons with low incomes, preschool children, women of childbearing age and the elderly) were oversampled at known rates. Adjusted sampling weights were then computed within 60 age, sex and race categories in order to inflate the sample in such a manner as to closely reflect the noninstitutionalized population, ages 1-74 years, of the United States at the midpoint of the survey. Although the main emphasis of HANES I was on nutrition, a subset of those sample persons aged 25-74 received a more detailed health examination which was continued through October 1975. No particular oversampling of subgroups of the population was done in this subsample (e.g., women of childbearing age were not oversampled as they were for the major nutrition component of HANES I). This subsample is also representative of the United States population aged 25-74 during the time of HANES I. After the nutrition survey was completed, the detailed examination given to the 25-74 age group was continued until the total number of examined persons was approximately double the number of examinees who received the detailed examination during the nutrition survey. DATA COLLECTION Data Collection: Information for all examined sample persons in HANES I was obtained by means of a household interview, a general medical history, a 24-hour dietary intake recall interview, a food frequency interview, a food program questionnaire, a general medical examination, dental, dermatological and ophthalmological examinations, anthropometric measurement, hand-wrist x-rays (of those ages 1-17 only) and 24 hematological, blood chemistry, and urological laboratory determinations. In addition to the information received on all examined persons by means of the above questionnaires, procedures and measurements, the following data were gathered on the subsample of adults aged 25-74: a medical history supplement; supplementary questionnaires concerning arthritis, respiratory and cardiovascular conditions (when applicable); a health care needs questionnaire; a general well-being questionnaire; an extended medical examination; x-rays of the chest and hip and knee joints; audiometry, electrocardiography; goniometry; spirometry; pulmonary diffusion and tuberculin tests; along with additional laboratory determinations. USE OF HANES DATA With the goal of mutual benefit, NCHS requests the cooperation of recipients of data tapes in certain actions related to their use: A. Any published material derived from the data should acknowledge the National Center for Health Statistics as the original source. It should also include a disclaimer which credits any analyses, interpretations, or conclusions reached to the author (recipient of the tape) and not to NCHS, which is responsible only for the initial data. B. Consumers who wish to publish a technical description of the data will make a reasonable effort to insure that the description is not inconsistent with that published by NCHS. This does not mean, however that NCHS will review such descriptions. ERRORS IN THE DATA SETS AND SURVEY DIFFERENCES The data users' tapes have been subjected to a great deal of careful editing. However, due to the large volume of data in the series, it is likely that a small number of errors or discrepancies remain undetected. We would appreciate if any such errors are detected that they be brought to our attention so that new corrected copies of the tape can be created and errata sheets issued to previous purchasers. Some of the continuous data items have extremely high or low values and we have verified that they do in fact appear that way on the hard documents; that is, we have verified that the values have not been incorrectly keyed. In general, we have not attempted to resolve any differences that may exist between estimates derived from the various subsamples of HANES I. Nor have we made any comparisons between estimates from HANES I and previous surveys conducted by the Division of Health Examination Statistics. VARIANCE ESTIMATION Because the Health and Nutrition Examination Survey is based upon a complex sample design, the assumptions of many statistical tests and routinely available statistical programs are not met. For this reason, when estimates of the variances of statistics from HANES are computed, the technique of estimation must be based upon complex sampling theory. In order to provide the user with the capability of estimating the complex sample variances, we have provided Strata and Primary Sampling Unit (PSU) codes on the HANES user tapes in tape positions 194-198. However, these codes are suitable for making variance estimates only for examination locations 1-65 and 1-100. To compute variance estimates for examination locations 1-35 or 66-100, it is necessary to recode the current Strata-PSU codes according to the specifications that follow. The resultant recoded Strata-PSU codes should be used only for locations 1-35 and 66-100. One computer program that should be widely available sometime around the summer of 1978 as part of the Statistical Analysis System (available from the SAS Institute, Inc., Post Office Box 10066, Raleigh, North Carolina 27605) is capable of using the Strata-PSU codes provided for HANES to compute complex sample variances. Other programs may also be available. In those Strata, referred to as certainty or self-representing Strata, the PSU codes are actually the segment numbers. Neither the Strata codes nor the PSU codes are the original codes used in the formation of the HANES sample design, but are nonetheless a unique Recoding of the original codes. For further discussion of the sample design of HANES, the user should consult the publications of the National Center for Health Statistics--Series-Nos. 10a and 14 and the detailed note for tape positions 158-193. Recode Specifications for Strata-PSU Codes First.--Create a files with only those records in the file for examination locations 1-35.* Second.--Retain 1he original Strata-PSU codes in Strata 7-10 and 13 in the original form as the recoded Strata-PSU codes. Third.--Recode the remaining strata according tot he chart below. Fourth.--Repeat the process for examination locations 66-100.* Old Strata # (tape positions 194-195) New Strata # New PSU 01 01 001 02 01 002 03 03 001 06 03 002 04 04 001 05 04 002 11 11 001 12 11 002 14 14 001 21 14 002 15 15 001 16 15 002 17 17 001 20 17 002 18 18 001 19 18 002 22 22 001 25 22 002 23 23 001 24 23 002 26 26 001 27 26 002 28 28 001 29 28 002 30 30 001 35 30 002 31 31 001 32 31 002 33 33 001 34 33 002 *See detailed note for tape positions 158-193. GENERAL NOTES, DEMOGRAPHIC DATA, HANES I Demographic Information: An advance letter, announcing the forthcoming arrival of an interviewer from the U. S. Bureau of the Census, was mailed to each household that fell into the sample area. The interviewer subsequently visited the household to ascertain its composition and to administer a questionnaire, the primary purpose of which was to obtain demographic information. The questionnaire was administered to each potential sample person that was available and competent enough to respond to questions. In the event that a potential sample person was not at home at the time of interview, any responsible adult in the household was asked to respond to the questions for the absent person. Asterisks on the Tape Description: Some of the data items were obtained only for a particular subsample of HANES. Consequently some of these items appear to have a great deal of missing data (coded as blank) due to nonresponse, but in fact the data are missing because the design of HANES dictated that the item was to be obtained only for a particular subsample. (For further discussion of the various subsamples in HANES the user should see the detailed note for tape positions 158-193.) To alert the user to this fact asterisks were put on the tape des- cription. One asterisk denotes that the data item was obtained only on examinees at locations 1-65, two asterisks denote that it was ob- tained only at location 66-100 and three asterisks denote that it was obtained only on examinees receiving the detailed examination. DEMOGRAPHIC DATA SUMMARY - HANES I Tape Positions Sample sequence number ............................................. 1 Size of place ...................................................... 10 SMSA-not SMSA ...................................................... 11 Type of living quarters............................................. 12 Land usage ......................................................... 13 If rural, asked - How many acres of land are included .............. 14 If 10 acres/more asked - Sale of crops/etc. amount to $50 or more .. 15 If 10 acres/less asked - Sale of crops/etc. amount to $250 or more . 16 Age - head of household ............................................ 17 Sex - head of household ............................................ 19 Highest grade attended - head of household ......................... 20 Race - head of household ........................................... 22 Total number of persons in household ............................... 23 Total sample persons in household .................................. 25 Number of rooms in house ........................................... 27 Is there piped water ............................................... 28 If yes, is there hot and cold piped water .......................... 29 If yes to piped water - Does house have a sink with piped water .... 30 Does house have a range or cook stove .............................. 31 Does house have a refrigerator ..................................... 32 Are kitchen facilities used by anyone not living in household ...... 33 Total family income group .......................................... 34 NOTE: The following income questions were asked only if "Total Family Income" was less than $7,000 Tape Positions During Past Year Did you or Any Members of Your Family Receive Money From: Wages or salaries .................................................. 36 If yes - How much altogether before deductions ..................... 37 Social Security or Railroad Retirement ............................. 41 If yes - How much altogether ....................................... 42 Welfare payments or other public assistance ........................ 46 If yes - How much altogether ....................................... 47 Unemployment or Workman's Compensation ............................. 51 If yes - How much altogether ....................................... 52 Government employee pensions or private pensions ................... 56 If yes - How much altogether ....................................... 57 Dividends, interest or rent ........................................ 61 If yes - How much altogether ....................................... 62 Net income from own non-farm business, professional practice or partnership ...................................................... 66 If yes - How much altogether ....................................... 67 Net income from a farm ............................................. 71 If yes - How much altogether ....................................... 72 Veteran's payments ................................................. 76 If yes - How much altogether ....................................... 77 Alimony, child support or contributions from persons not living in household ........................................................ 81 If yes - How much altogether ....................................... 82 Any other income ................................................... 86 If yes - How much altogether ...................................... 87 Total amount....................................................... 91 Family unit code ................................................... 95 Relationship to head of household .................................. 100 Age at interview ................................................... 101 Race of examined person ............................................ 103 Sex of examined person ............................................. 104 Marital status ..................................................... 105 Date of birth (month and year) ..................................... 106 Place of birth ..................................................... 110 Highest grade of regular school ever attended ...................... 112 Did he finish the grade ............................................ 114 Is he attending school now ......................................... 115 Has he ever attended a school of any kind .......................... 116 If yes - What kind of school ....................................... 117 Any language other than English frequently spoken in the household.. 118 If yes - What language ............................................. 119 What is your main ancestry or national origin ...................... 120 What was he doing most of past three months ........................ 122 If "something else" - What was he doing ............................ 123 If "keeping house" or "something else" - Did he work at a job or business at any time during the past three months ................ 124 If "working" - Did he work full-time or part-time .................. 125 Did he work at any time last week or week before (not around house). 126 If no - Even though he did not work during that time, does he have a job or business ................................................ 127 Tape Positions Was he looking for work or on lay-off from a job ................... 128 If yes - Which ..................................................... 129 Class of worker .................................................... 130 If self-employed in "own" business and not a farm, is the business incorporated ..................................................... 131 Business or industry code .......................................... 132 Occupation code .................................................... 135 Date of examination ................................................ 138 Age at examination ................................................. 144 Farm/non-farm ...................................................... 146 Poverty index ...................................................... 147 Region ............................................................. 150 FOOD PROGRAMS APPLICABILITY ........................................ 151 Are you certified to participate in the food stamp program? ........ 152 Are you buying food stamps now? .................................... 153 What is the main reason you aren't participating in the program? ... 154 Are you certified to participate in commodity distribution program?. 155 Are you receiving commodity foods now for your family? ............. 156 Why aren't you participating in the program? ....................... 157 SAMPLE WEIGHTS ..................................................... 158 STRATA - Primary Sampling Unit (PSU) ............................... 194RECORD LAYOUT, DEMOGRAPHIC DATA HEALTH AND NUTRITION EXAMINATION SURVEY (HANES I) Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source DEMOGRAPHIC DATA 1-5 Sample Sequence Number 6-9 Catalog Number 10 Size of Place Urbanized area with: 1 - 3,000,000 or more Hshld Questionnaire 2 - 1,000,000 to 2,999,999 See Detailed Notes 3 - 250,000 to 999,999 4 - under 250,000 5 - Urban place 25,000 or more outside urbanized area 6 - Urban place 10,000 to 24,999 outside urbanized area 7 - Urban place 2,500 to 9,999 outside urbanized area 8 - Rural 11 SMSA - Not SMSA 1 - In SMSA, in central city Hsehld Questionnaire 2 - In SMSA, not in central city See Detailed Notes 3 - Not in SMSA 12 Type of Living Quarters 1 - Housing Unit Hsehld Questionnaire 2 - Other unit 13 Land Usage 1 - All other Hsehld Questionnaire 2 - Rural 7136 14 If Rural, asked How Many Acres of Land Are Included? Hsehld Questionnaire 1 - 10 or more acres 2 - Less than 10 acres 9 - Not applicable Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 15 If 10 acres or more, asked if Sale of Crops, Etc. Amount to $50 or more? Hsehld Questionnaire 2 - Yes 4 - No 9 - Not applicable 16 If 10 acres or less, asked if Sale of Crops, Etc. Amount to $250 or more? Hsehld Questionnaire 3 - Yes 5 - No 9 - Not applicable 17-18 Age - Head of Hsehld 16-92 as given Hsehld Questionnaire 00 Blank, but applicable 19 Sex - Head of Hsehld Hsehld Questionnaire 1 - Male 2 - Female 20-21 Highest Grade Attended - Head of Hsehld 10 - None Hsehld Questionnaire 21 - 1st grade 22 - 2nd grade 23 - 3rd grade 24 - 4th grade 25 - 5th grade 26 - 6th grade 27 - 7th grade 28 - 8th grade 31 - 9th grade 32 - 10th grade 33 - 11th grade 34 - 12th grade 41 - First year of college 42 - Second year of college 43 - Third year of college 44 - Fourth year of college 45 - Graduate 88 - Blank, but applicable Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 22 Race - Head of Household 1 - White Hsehld Questionnaire 2 - Negro See Detailed Notes 3 - Other 23-24 Total Number of Persons in Household 01-19 - As given Hsehld Questionnaire 25-26 Total Sample Persons in Household 01-07 - As given Hsehld Questionnaire 27 Number of Rooms in House 1-8 - As given Hsehld Questionnaire 9 - 9 or more 28 Is there piped water? 1 - Yes Hsehld Questionnaire 2 - No 29 If yes Is there Hot and Cold piped water? 1 - Yes Hsehld Questionnaire 2 - No 9 - Not applicable 30 If yes to piped water - Does House Have a Sink with Piped Water? 1 - Yes Hsehld Questionnaire 2 - No 9 - Not applicable 31 Does House Have a Range or Cook Stove? 1 - Yes Hsehld Questionnaire 2 - No Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 32 Does House have a Regrigerator? 1 - Yes Hsehld Questionnaire 2 - No 33 Are kitchen facilities used by anyone not living in household? 1 - Yes Hsehld Questionnaire 2 - No 9 - Not applicable 34-35 Total Family Income Group 11 - Under $1,000(including loss) Hsehld Questionnaire 12 - $1,000-1,999 See Detailed Notes 13 - $2,000-2,999 14 - $3,000-3,999 15 - $4,000-4,999 16 - $5,000-5,999 17 - $6,000-6,999 18 - $7,000-9,999 19 - $10,000-14,999 20 - $15,000-19,999 21 - $20,000-24,999 22 - $25,000 and over 88 - Blank, but applicable NOTE: The following income questions were asked only if "Total Family Income" was less than $7,000 DURING PAST YEAR DID YOU OR ANY MEMBERS OF YOUR FAMILY RECEIVE MONEY FROM: 36 Wages or Salaries? 1 - Yes Hsehld Questionnaire 2 - No 3 - Blank, but applicable 9 - Not applicable Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 37-40 If yes to above, how much altogether before deductions? 0001-8000 - As given Hsehld Questionnaire 8888 - Blank, but applicable 9999 - Not applicable 41 Social Security or Railroad Retirement? 1 - Yes Hsehld Questionnaire 2 - No 3 - Blank, but applicable 9 - Not applicable 42-45 If yes to above, how much altogether? 0001-6999 - As given Hsehld Questionnaire 8888 - Blank, but applicable 9999 - Not applicable 46 Welfare Payments or Other Public Assistance? 1 - Yes Hsehld Questionnaire 2 - No 3 - Blank, but applicable 9 - Not applicable 47-50 If yes to above, hyow much altogether? 0001-6999 - As given Hsehld Questionnaire 8888 - Blank, but applicable 9999 - Not applicable 51 Unemployment or Workmen's Compensation? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 52-55 If yes to above, how much altogether? 0001-6999 - As given Hsehld Questionnaire 8888 - Blank, but applicable 9999 - Not applicable 56 Government Employee Pensions or Private Pensions? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable 57-60 If yes to above, how much altogether? 0001-6999 - As given Hsehld Questionnaire 8888 - Blank, but applicable 9999 - Not applicable 61 Dividends, interest or rent? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable 62-65 If yes to above, how much altogether? 0001-6999 - As given Hsehld Questionnaire 8888 - Blank, but applicable 9999 - Not applicable 66 Net income from own non-farm business, professional practice or partnership? 1 - Yes Hsehld Questionnaire 2 - No 3 - Loss 8 - Blank, but applicable 9 - Not applicable Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 67-70 If yes to above, how much altogether? 0000-7500 - As given Hsehld Questionnaire 8888 - Blank, but applicable 9999 - Not applicable 71 Net income from a farm? 1 - Yes Hsehld Questionnaire 2 - No 3 - Loss 8 - Blank, but applicable 9 - Not applicable 72-75 If yes to above, how much altogether? 0000-7500 - As given Hsehld Questionnaire 8888 - Blank, but applicable 9999 - Not applicable 76 Veteran's Payments? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable 77-80 If yes to above, how much altogether? 0001-6999 - As given Hsehld Questionnaire 8888 - Blank, but applicable 9999 - Not applicable 81 Alimony, child support or contributions from persons not living in Hsehld? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 82-85 If yes to above, how much altogether? 0001-6999 - As given Hsehld Questionnaire 8888 - Blank, but applicable 9999 - Not applicable 86 Any other income? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable 87-90 If yes to above, how much altogether? 0001-6900 - As given Hsehld Questionnaire 8888 - Blank, but applicable 9999 - Not applicable 91-94 Total Amount (Total of Positions 37-90) 0000-6999 - As given Hsehld Questionnaire 8888 - Blank, but applicable 9999 - Not applicable 95-99 FAMILY UNIT CODE Computer generated 00001-23180 See Detailed Notes 100 Relationship to Head of Household (Hsehld Questionnaire) 1 - Head (1 person living along or with non-relatives) 1920 2 - Head (2 or more related persons in family) 4912 3 - Wife 5256 4 - Child 7733 5 - Other relative 928 101-2 Age at Interview 01-74 - As given Hsehld Questionnaire Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 103 Race of Examined Person 1 - White Hsehld Questionnaire 2 - Negro See Detailed Notes 3 - Other 104 Sex of Examined Person 1 - Male Hsehld Questionnaire 2 - Female 105 Marital Status 1 - Under 17 Hsehld Questionnaire 2 - Married 3 - Widowed 4 - Never Married 5 - Divorced 6 - Separated 8 - Blank, but applicable 106-9 Date of Birth (month, year) 01-12 - Month as given Hsehld Questionnaire 00-99 - Year (1896-1973) as given 110-11 Place of Birth (As given) 01-02 Hsehld Questionnaire 04-06 See Detailed Notes 08-13 15-42 44-51 53-56 60-81 91-97 88 - Blank, but applicable 144 Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 112-13 Highest Grade of regular school ever attended? 10 - None Hsehld Questionnaire 21 - 1st grade 22 - 2nd grade 23 - 3rd grade 24 - 4th grade 25 - 5th grade 26 - 6th grade 27 - 7th grade 28 - 8th grade 31 - 9th grade 32 - 10th grade 33 - 11th grade 34 - 12th grade 41 - First year of college 42 - Second year of college 43 - Third year of college 44 - Fourth year of college 45 - Graduate 77 - Special school 88 - Blank, but applicable 99 - Not applicable 114 Did he finish the grade? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable 115 Is he attending school now? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 116 Has he ever attended a school of any kind? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable 117 If yes, what kind of school? 1 - Nursery Hsehld Questionnaire 2 - Kindergarten 3 - Other 4 - Headstart 5 - Daycare 8 - Blank, but applicable 9 - Not applicable 118 Is any language other than English frequently spoken in the household? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 119 If yes, what language? 0 - German Hsehld Questionnaire 1 - Italian 2 - French 3 - Polish 4 - Russian 5 - Spanish 6 - Chinese 7 - Other language 8 - Blank, but applicable 9 - Not applicable Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 120-21 What is your main ancestry or national origin? 00 - German Hsehld Questionnaire 01 - Irish 02 - Italian 03 - French 04 - Polish 05 - Russian 06 - English 07 - Spanish 08 - Mexican 09 - Chinese 10 - Japanese 11 - American Indian 12 - Negro 13 - Jewish 14 - American 15 - Other 88 - Blank, but applicable 99 - Don't know 122 What was he doing most of past three months? 1 - Working Hsehld Questionnaire 2 - Keeping house 3 - Something else 8 - Blank, but applicable 9 - Not applicable 123 If "something else" from above, what was he doing? 0 - Laid off Hsehld Questionnaire 1 - Retired 2 - Student 3 - Other 4 - Ill 5 - Staying home 6 - Looking for work 7 - Unable to work 8 - Blank, but applicable 9 - Not applicable Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 124 If "keeping house" or "something else" from above, did he work at a job or business at any time during the past three months? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable 125 If "Working" from above, did he work full-time or part-time? 1 - Full-time Hsehld Questionnaire 2 - Part-time 8 - Blank, but applicable 9 - Not applicable 126 Did he work at any time last week or the week before (not around house)? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable 127 If "no" to above, even though he did not work during that time, does he have a job or business? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable 128 If "no" in Position 126, was he looking for work or on lay-off from a job? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 129 If yes to above - which? 1 - Looking Hsehld Questionnaire 2 - Lay-off 3 - Both 8 - Blank, but applicable 9 - Not applicable 130 Class of Worker 1 - Private paid Hsehld Questionnaire 2 - Government-Federal 3 - Government-Other 4 - Own 5 - Non-paid 6 - Never worked 8 - Blank, but applicable 9 - Not applicable 131 If self-employed in "own" business and not a farm, is the business incorporated? 1 - Yes Hsehld Questionnaire 2 - No 8 - Blank, but applicable 9 - Not applicable 132-34 Business or Industry Code 017-999 - As given Hsehld Questionnaire 135-37 Occupation Code 001-995 - As given Hsehld Questionnaire 138-43 Date of Examination Month - 01-12 as given Control Record Day - 01-31 as given Year - 71-75 as given Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 144-45 Age at Examination 01-75 - As given Computer Generated 146 Farm 1 - Farm Computer Generated 2 - Nonfarm See Detailed Notes 147-49 Poverty Index (X.XX) 001-997 - As given Computer Generated 998 - Index computed 998 See Detailed Notes or greater 999 - Unknown 150 Region 1 - Northeast Computer Generated 2 - Midwest See Detailed Notes 3 - South 4 - West 151 FOOD PROGRAMS APPLICABILITY 1 - Not applicable Food Programs Quest. 2 - No program available 3 - Food stamps available 4 - Commodities available 8 - Blank, but applicable 152 Are you certified to participate in the food stamp program? 1 - Yes Food Programs Quest. 2 - No 9 - Don't know Blank Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source 153 Are you buying stamps now? 1 - Yes, regularly Food Programs Quest. 2 - Yes, occasionally 3 - No 8 - Blank, but applicable Blank 154 What is the main reason you aren't participating in the program? 1 - No need Food Programs Quest. 2 - Not enough money at the time 3 - No transportation 4 - Pride 5 - Other 8 - Blank, but applicable Blank 155 Are you certified to participate in the commodity distribution program? 1 - Yes Food Programs Quest. 2 - No 9 - Don't know Blank 156 Are you receiving commodity foods now for your family? 1 - Yes, regularly Food Programs Quest. 2 - Yes, occasionally 3 - No 8 - Blank, but applicable Blank 157 Why aren't you participating in the program? 1 - No need Food Porgrams Quest. 2 - No transportation 3 - Pride 4 - Other 8 - Blank, but applicable Blank Tape Control HANES I Data Loc. ITEM DESCRIPTION & CODES Counts Source SAMPLE WEIGHTS 158-63 Detailed Persons, Location 01-35 See Detailed Notes Blanks 164-69 All Sample Persons, Locations 01-35 See Detailed Notes Blanks 170-75 Detailed Persons, Locations 01-65 See Detailed Notes Blanks 176-81 All Sample Persons, Locations 01-65 See Detailed Notes Blanks 182- Work Area 193 194- STRATA 1/ 195 196- Primary Sampling Unit1/ 198 199- Work Area 200 1/Use only for producing variance estimates for examination locations 1-65 or 1-100. See General Note titled "Variance Estimation" for producing variance estimates for examination locations 1-35 or 66-100. DETAILED NOTES, DEMOGRAPHIC DATA Tape Position 10 - Size of Place Size of place classification was derived from the 1960 census. According to the definition used in the 1960 census, the urban population was comprised of all persons living in (a) places of 2,500 inhabitants or more incorporated as cities, boroughs, villages and towns (except towns in New York, New England, and Wisconsin); (b) the densely settled urban fringe, whether incorporated or unincorporated, or urbanized areas; (c) towns in New England and townships in New Jersey and Pennsylvania which contained no incorporated municipalities as subdivisions and had either 2,500 inhabitants or more, or a population of 2,500 to 25,000 and a density of 1,500 persons or more per square mile; (d) counties in states other than the New England states, New Jersey, and Pennsylvania, that had no incorporated municipalities within their boundaries and had a density of 1,500 persons per square mile; and (e) unincorporated places of 2,500 inhabitants or more not included in any urban fringe. The remaining population was classified as rural. Urban areas are further classified by population size for places within urbanized areas and other places outside urbanized areas. Tape Position 11 - SMSA A standard metropolitan statistical area is basically a county or a group of contiguous counties which contains at least one city of 50,000 inhabitants or more, or "twin cities" with a combined population of at least 50,000. In addition to the county or counties containing such a city or cities, contiguous counties are included in an SMSA if, according to the 1960 Census, they are socially and economically integrated with the central city. Each SMSA must include at least one central city, and the complete title of an SMSA identifies the central city or cities. Tape Positions 22 and 103 - Race The race of the respondent was marked by observation and it was assumed the race of all related persons was the same as the respondent unless otherwise learned. The race categories were "White", "Negro", or "other." If the appropriate category could not be marked by observation, then race was asked. Persons of races other than White or Negro, such as Japanese, Chinese, American Indian, Korean, Hindu, Eskimo, etc. were reported as "Other." Mexicans were included with "White" unless definitely known to be American Indian or of other nonwhite race. Tape Positions 34-35 - Total Family Income Group The income group represents the total combined family income for the past twelve (12) months. It includes income from all sources such as wages, salaries, social security or retirement benefits, help from relatives, rent from property and so forth. The income groups were not reconciled to the component parts (tape positions 36-94). The income component parts were not asked when the gross income was greater than $6,999 per annum. However, amounts greater than $6,999 appear in tape positions 37-40, 67-70, and 72-75. Some respondents reported a loss of income from their nonfarm business, professional practice, partnership or farm and this explains why some data fields are greater than $6,999, but the individual total in tape positions 91-94 does not exceed this figure. Tape Positions 95-99 - Family Unit Code All related sample persons in the same family unit have the same computer generated family unit code. This will enable detailed analysis of the individual family unit. Tape Positions 110-111 - State Codes UNITED STATES OUTLYING AREAS OF THE U.S. Standard Abbreviation Code Name of Place Cod ALABAMA Ala. 01 American Samoa 60 ALASKA Alaska 02 Canal Zone 61 ARIZONA Ariz. 04 Canton and Enderbury Islands 62 ARKANSAS Ark. 05 Caroline Islands 63 CALIFORNIA Calif. 06 Cook Islands 64 COLORADO Colo. 08 Gilbert and Ellice Islands 65 CONNECTICUT Conn. 09 Guam 66 DELAWARE Del. 10 Johnston Atoll 67 DIST. OF COLUMBIA D.C. 11 Line Islands - Southern 68 FLORIDA Fla. 12 Mariana Islands 69 GEORGIA Ga. 13 Marchall Islands 70 HAWAII Hawaii 15 Midway Islands 71 IDAHO Idaho 16 Puerto Rico 72 ILLINOIS Ill. 17 Ryukyn Islands - Southern 73 INDIANA Ind. 18 Swan Islands 74 IOWA Iowa 19 Tokelau Islands 75 KANSAS Kans. 20 U.S. Misc. Caribbean 76 KENTUCKY Ky. 21 U.S. Misc. Pacific Islands 77 LOUISIANA La. 22 Virgin Islands 78 MAINE Maine 23 Wake Islands 79 MARYLAND Md. 24 Cuba 80 MASSACHUSETTS Mass. 25 West Indies 81 MICHIGAN Mich. 26 North America 91 MINNESOTA Minn. 27 South America 92 MISSISSIPPI Miss. 28 Europe 93 MISSOURI Mo. 29 Africa 94 MONTANA Mont. 30 Asia 95 NEBRASKA Nebr. 31 Australasia 96 NEVADA Nev. 32 Pacific Islands 97 NEW HAMPSHIRE Nebr. 33 NEW JERSEY N.J. 34 NEW MEXICO N. Mex. 35 NEW YORK N.Y 36 NORTH CAROLINA N.C. 37 NORTH DAKOTA N. Dak. 38 OHIO Ohio 39 OKLAHOMA Okla. 40 OREGON Oreg. 41 PENNSYLVANIA Pa. 42 RHODE ISLANDS R.I. 44 SOUTH CAROLINA S.C. 45 SOUTH DAKOTA S. Dak. 46 UNITED STATES Standard Abbreviation Code TENNESSEE Tenn. 47 TEXAS Tex. 48 UTAH Utah 49 VERMONT Vt. 50 VIRGINIA Va. 51 WASHINGTON Wash. 53 WEST VIRGINIA W. Va. 54 WISCONSIN Wis. 55 WYOMING Wyo. 56 Tape Positions 132-134 and 135-137 - Industry & Occupation Codes A person's occupation may be defined as his principal job or business. For this survey purpose, the principal job or business of a respondent is defined in one of the following ways: If the person worked during the two week interview period or had a job or business, the question concerning his occupation (or work) applies to his job during that period. If the respondent held more than one job, the question is directed to the one at which he spent the most time. It refers to the one he considers most important when equal time is spent at each job. A person who has not begun work at a new job, is looking for work, or is on layoff from work is questioned about his last full- time civilian job. A full-time job is defined as one at which the person spen 35 or more hours per week and which lasted two consecutive weeks or more. A person who has a job to which he has not yet reported and has never had a previous job or business is classified as a "new worker." The 1970 census of population Alphabetical Index of Industries and Occupations was used in the coding of both the industry and occupation. Library of Congress Number 74-612012. For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402. $3.00. Stock Number 0301-2283. Tape Position 146 - Land Land used for farming purposes (Code 1 in Tape Position 146) was identified as being rural land (Code 2 in Tape Position 13) consisting of 10 or more acres (Code 1 in Tape Position 14) with crop sales amounting to $50 or more (Code 2 in Tape Position 15), or rural land (Code 2 in Tape Position 13) consisting of less than 10 acres (Code 2 in Tape Position 14) with crop sales amounting to $250 or more (Code 3 in Tape Position 16). All Other land is classified as nonfarm (Code 2 in Tape Position 146). Tape Positions 147-149 - Poverty Index Poverty Index--Income status was determined by the Poverty Income Ratio (PIR). Poverty statistics published in the Census Bureau reports1/ were based on the poverty index developed by the Social Security Administration in 1964. (For a detailed discussion of the SSA poverty standards, see reference 2.) Modifications in the definition of poverty were adopted in 1969.3/ The standard data series in poverty for statistical use by all executive departments and establishments has been established.4/ The two components of the PIR are the total income of the household (numerator) and a multiple of the total income necessary to maintain a family with given characteristics on a nutritionally adequate food plan3/ (denominator). The dollar value of the denominator of the PIR is constructed from a food plan (economy plan) necessary to maintain minimum recommended daily nutritional requirements. The economy plan is designated by the Department of Agriculture for "emergency or temporary use when funds are low." For families of three or more persons, the poverty level was set at three times the cost of the economy food plan. For smaller families and persons living alone, the cost of the economy food plan was adjusted by the relatively higher fixed expenses of these smaller households. The denominator or poverty income cutoff adjusts the family poverty income maintenance requirements by the family size, the sex of the family head, the age of the family head in families with one or two members, and the place of residence (farm, nonfarm). Annual revisions of the poverty income cutoffs are based on the changes in the average cost of living as reflected in the Consumer Price Index. As shown in the table, the annual income considered to be the poverty level increases as the family size increases. A family with any combination of characteristics and with the same income as shown in the table has been designated as having a PIR or poverty level of 1.0. The same family with twic the income found in the table would have a PIR of 2.0. Ratios of less than 1.0 can be described as "below poverty," ratios greater than or equal to 1.0, as "at or above poverty." Poverty thresholds are computed on a national basis only. No attempt has been made to adjust these thresholds for regional, State, or other local variation in the cost of living (except for the farm, nonfarm difference). None of the noncash public welfare benefits such as food stamp bonuses or free food commodities are included in the income of the low income families receiving these benefits. 1/ Current Populatrion Reports, "Consumer Income," Series P-60, No. 77, May 7, 1971 2/ Orshansky, M.: "Counting the Poor: Another Look at the Poverty Profile, Social Security Bulletin, January 1965; "Who's Who Among the Poor: A Demographic View of Poverty," Social Security Bulletin, July 1965. 3/ Current Population Reports, "Special Studies," Series P-23, No. 28, August 12, 1969 4/ Circular No. A-46, Transmitted Memorandum No. 9, Executive Office of the President, Bureau of the Budget, August 29, 1969, and Exhibit L (rev.) Weighted average thresholds at the low income level in 1971 by size of family and sex of head, by farm-nonfarm residence Nonfarm Farm Size of family Total Total Male1 Female1 Total Male1 Female1 head head head head All unrelated individuals- $2,033 $2,040 $2,136 $1,978 $1,727 $1,783 $1,669 Under 65 years--------- 2,093 3,098 2,181 2,017 1,805 1,853 1,715 65 years and over------ 1,931 1,940 1,959 1,934 1,652 1,666 1,643 All families-------------- 3,700 3,724 3,764 3,428 3,235 3,242 3,079 2 persons-------------- 2,612 2,633 2,641 2,581 2,219 2,224 2,130 Head under 65 years---- 2,699 2,716 2,731 2,635 2,317 2,322 2,195 Head 65 years and over- 2,424 2,448 2,450 2,437 2,082 2,081 2,089 3 persons-------------- 3,207 3,229 3,248 3,127 2,745 2,749 2,627 4 persons-------------- 4,113 4,137 4,139 4,116 3,527 3,528 3,513 5 persons-------------- 4,845 4,880 4,884 4,837 4,159 4,159 4,148 6 persons-------------- 5,441 5,489 5,492 5,460 4,688 4,689 4,656 7 persons or more------ 6,678 6,751 6,771 6,583 5,736 5,749 5,516 1For unrelated individuals, sex of the individual. SOURCE: U.S. Department of Commerce, Social and Economic Statistics Administration, U.S. Bureau of the Census "Characteristics of the Low Income Population: 1971," Current Population Reports, Series P-60, No. 86, p. 18. Tape Position 150 - Region The United States was divided into four broad geographic regions of approximately equal population. These regions, which deviate somewhat from the groups used by the Bureau of the Census, are as follows: Region States Included Northeast Maine, Vermont, New Hampshire, Massachusetts, Connecticut, Rhode Island, New York, New Jersey, and Pennsylvania South Delaware, Maryland, District of Columbia, West Virginia, Virginia, Kentucky, Tennessee, North Carolina, South Carolina, Georgia, Florida, Alabama, Mississippi, Louisiana, and Arkansas Midwest Ohio, Illinois, Indiana, Michigan, Wisconsin, Minnesota, Iowa, Missouri West Washington, Oregon, California, Nevada, New Mexico, Arizona, Texas, Oklahoma, Kansas, Nebraska, North Dakota, South Dakota, Idaho, Utah, Colorado, Montana, and Wyoming. Tape Positions 158-193 - HANES HANES is a multistage, stratified, probability sample of loose clusters of persons in land-based segments. In addition, HANES is composed of two distinct examination components--a nutrition screening examination (taken by all examinees) and a more detailed examination taken by a pre-selected subsample of all examinees, ages 25-74. For the nutrition screening examination, locations 1-35 and 1-65 constituted national probability samples and for the detailed examination, locations 1-35, 1-65, 66-100 and 1-100 all constitute national probability samples. In other words, HANES is composed of six distinct subsamples of the U.S. population. For a more detailed discussion of the sample design see Series 1, No. 10a. Since each of these six subsamples is a distinct subsample of the U.S. population, such subsample requires a different set of weights. The weights are based upon the probability of selection into the sample, adjustments for nonresponse and further adjustments to approximate the U.S. noninstitutionalized population as of the midpoint of each subsample. In order to select all of those examinees in a particular subsample, i.e. received a particular exam component, it is necessary to exclude all examinees with a weight of zero or blank. It is also necessary to exclude all zero or blank weights because that is the only way to differentiate missing data due to nonresponse from data that is missing because the sample design dictated that a particular examinee was not supposed to receive particular examination component. It is suggested that any analyses that are desired by the researcher be performed using the greatest number of examinees possible; that is, if the researcher is interested in an exam component of the nutrition screening examination he should use the weight and consequently the data from the 65 location subsample rather than the 35 location subsample. For the detailed examination, the researcher should use the 100 location subsample rather than one of the others. However, some exam components were only done in a particular subsample; for example, only at the first 35 locations. In that case, the researcher has no choice in selecting a particular subsample. There may be occasions when a researcher may want to make comparisons of estimates obtained from various subsamples. For example, the prevalence of some disease condition as estimated from the first 35 locations could be compared with an estimate based upon locations 66-100. The researcher may also want to formulate hypotheses using 1 subsample and test those hypotheses using another subsample. GENERAL NOTES, VISION DATA, HANES I Distance Vision Examination:The distance vision test used in this examination was designed to measure visual acuity without using devices that simulated the recommended 20-foot distance (e.g., optical methods such as mirrors used in previous examination programs). This examination used Good-lite transilluminated wall charts with Sloan letters at an actual distance of 20 feet. The direct and background lighting was carefully controlled to ensure accuracy. The examiner tested for both binocular and monocular distance vision. Near Vision Examination: The near vision examination was designed to measure vision problems people may have when reading ordinary types of reading materials.Both the Keeney and Sloan Vision Examinations (tests) were given to each examinee.No standard reading distance (from examinee to selection to be read) was required.Each examinee was allowed to choose a comfortable distance (recorded in centimeters) at which he could read the smallest print of a particular selection of cards without any trouble.Once the smallest print was read,it was termed "the Smallest Read Satisfactorily,"which is defined as the selection where the examinee reached his difficulty level; that is, he was unable to read the subsequent (card) selection.This selection is coded as '1.' All correctly read selections prior to this "Smallest Read Satisfactorily" selection were left blank. Other Vision Data:Physical examination data relating to the eyes can be found in tape locations 239-245 of the General Medical Examination, 1-74 years (catalog number 4233). Certain vision-related questions can be found on the Medical History Questionnaire, 1-11 years (catalog number 4067) and also on the Medical History Questionnaire, 12-74 years (catalog number 4081). VISION DATA SUMMARY - HANES I NEAR AND DISTANT VISION DATA SUMMARY--HANES I Tape Positions CATALOG NUMBER - 4163 .................................................. 201 Examiner Number (Distance) ............................................. 209 Examiner Number (Near) ................................................. 213 DISTANCE VISION With or without correction ............................................. 225 With correction - both eyes ............................................ 226 Without correction - both eyes ......................................... 228 With usual correction - left eye ....................................... 230 With usual correction - right eye ...................................... 232 Test results (not done/unsatisfactory) ................................. 234 NEAR VISION With or without correction ............................................. 235 Test using Sloan reading cards (both eyes) Selection 500 - Attempted .......................................................... 236 Distance........................................................... 237 Smallest read satisfactorily ....................................... 240 Number wrong ....................................................... 241 Selection 350 - Attempted .......................................................... 242 Distance........................................................... 243 Smallest read satisfactorily ....................................... 246 Number wrong ....................................................... 247 Selection 250 - Attempted .......................................................... 249 Distance........................................................... 250 Smallest read satisfactorily ....................................... 253 Number wrong ....................................................... 254 Selection 200 - Attempted .......................................................... 256 Distance........................................................... 257 Smallest read satisfactorily ....................................... 260 Number wrong ....................................................... 261 Selection 150 - Attempted .......................................................... 263 Distance........................................................... 264 Smallest read satisfactorily ....................................... 267 Number wrong ....................................................... 268 NEAR AND DISTANT VISION DATA SUMMARY--HANES I Tape Positions NEAR VISION - continued Selection 125 - Attempted .......................................................... 270 Distance........................................................... 271 Smallest read satisfactorily ....................................... 274 Number wrong ....................................................... 275 Selection 100 - Attempted .......................................................... 277 Distance........................................................... 278 Smallest read satisfactorily ....................................... 281 Number wrong ....................................................... 282 Selection 75 - Attempted .......................................................... 284 Distance........................................................... 285 Smallest read satisfactorily ....................................... 288 Number wrong ....................................................... 289 Selection 50 - Attempted .......................................................... 292 Distance........................................................... 293 Smallest read satisfactorily ....................................... 296 Number wrong ....................................................... 297 Test using Keeney read cards (both eyes) Selection 130 - Attempted .......................................................... 300 Distance........................................................... 301 Smallest read satisfactorily ....................................... 304 Number wrong ....................................................... 305 Selection 120 - Attempted .......................................................... 307 Distance........................................................... 308 Smallest read satisfactorily ....................................... 311 Number wrong ....................................................... 312 Selection 85 - Attempted .......................................................... 314 Distance........................................................... 315 Smallest read satisfactorily ....................................... 318 Number wrong ....................................................... 319 Selection 65 - Attempted .......................................................... 321 Distance........................................................... 322 Smallest read satisfactorily ....................................... 325 Number wrong ....................................................... 326 Selection 50 - Attempted .......................................................... 328 Distance........................................................... 329 Smallest read satisfactorily ....................................... 332 Number wrong ....................................................... 333 NEAR AND DISTANT VISION DATA SUMMARY--HANES I Tape Positions NEAR VISION - continued Selection 40 - Attempted .......................................................... 335 Distance........................................................... 336 Smallest read satisfactorily ....................................... 339 Number wrong ....................................................... 340 Selection 30 - Attempted .......................................................... 342 Distance........................................................... 343 Smallest read satisfactorily ....................................... 346 Number wrong ....................................................... 347 Selection 20 - Attempted .......................................................... 349 Distance........................................................... 350 Smallest read satisfactorily ....................................... 353 Number wrong ....................................................... 354 Conditions interferring with test ...................................... 356 NEAR VISION (FOR NON-ENGLISH OR ILLITERATES) With or without correction ............................................. 357 Test using Sloan letters (both eyes) Selection 500 - Distance........................................................... 358 Score .............................................................. 361 Selection 350 - Distance........................................................... 362 Score .............................................................. 365 Selection 250 - Distance........................................................... 366 Score .............................................................. 369 Selection 200 - Distance........................................................... 370 Score .............................................................. 373 Selection 150 - Distance........................................................... 374 Score .............................................................. 377 Selection 125 - Distance........................................................... 378 Score .............................................................. 381 Selection 100 - Distance........................................................... 382 Score .............................................................. 385 Selection 75 - Distance........................................................... 386 Score .............................................................. 389 NEAR AND DISTANT VISION DATA SUMMARY--HANES I Tape Positions NEAR VISION (FOR NON-ENGLISH OR ILLITERATES) - continued Selection 50 - Distance........................................................... 390 Score .............................................................. 393 Test using Keeney letters (both eyes) Selection 130 - Distance........................................................... 394 Score .............................................................. 397 Selection 120 - Distance........................................................... 398 Score .............................................................. 401 Selection 85 - Distance........................................................... 402 Score .............................................................. 405 Selection 60 - Distance........................................................... 406 Score .............................................................. 409 Selection 50 - Distance........................................................... 410 Score .............................................................. 413 Selection 40 - Distance........................................................... 414 Score .............................................................. 417 Selection 30 - Distance........................................................... 418 Score .............................................................. 421 Selection 20 - Distance........................................................... 422 Score .............................................................. 425 Angle of visual acuity (Sloan) non-illiterate .......................... 426 Angle of visual acuity (Keeney) non-illiterate ......................... 430 Angle of visual acuity (Sloan) illiterate .............................. 434 Angle of visual acuity (Keeney) illiterate ............................. 438 RECORD LAYOUT, VISION DATA HEALTH AND NUTRITION EXAMINATION SURVEY (HANES I) VISION TAPE DOCUMENTATION (n = 3059) Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source 201- Catalog Number 204 4163 205- Blank - Data User Work Area 208 209- Examiner Number (Distance) Vision Testing Recording 210 69-86, 90-98 - As given 3059 Form 211- Blank - Data User Work Area 212 213- Examiner Number (Near) 214 33-68 - As given 3059 215- Blank - Data User Work Area 224 DISTANCE VISION 225 With or Without Correction See Detailed Notes. 1 - Wears glasses for test 1434 2 - Wears contact lenses for test 57 3 - Forgot (glasses, contact lenses) 18 4 - Does not wear either glasses or contact lenses 1521 8 - Blank, but applicable 12 Blank 17 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form 226- With Correction - Both Eyes (Binocular) See Detailed Notes 227 00-12 - As given 1529 Blank 1530 228- Without Correction - Both Eyes See Detailed Notes 229 (Binocular) 00-12 - As given 2875 Blank 184 230- With Usual Correction - Left Eye See Detailed Notes 231 (Monocular) 00-12 - As given 2972 Blank 87 232- With Usual Correction - Right Eye See Detailed Notes 231 (Monocular) 00-12 - As given 3001 Blank 58 234 Test Results 1 - Test not done 39 2 - Test unsatisfactory 21 Blank 2999 NEAR VISION 235 With or Without Correction 1 - Wears glasses for test 1710 2 - Wears contact lenses for test 51 3 - Forgot (glasses, contact lenses) 74 4 - Does not wear either glasses or contact lenses 1049 8 - Blank, but applicable 25 Blank 150 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form TEST USING SLOAN READING CARDS (BOTH EYES) Selection 500 (8 possible words) 236 Attempted 1 - Attempted 0 Blank 3059 237- Distance 239 010-065 (cm) - As given 0 Blank 3059 240 Smallest Read Satisfactorily 1 - Read satisfactorily 0 Blank 3059 241 Number Wrong 0-8 - Number wrong 0 Blank 3059 Selection 350 (12 possible words) 242 Attempted 1 - Attempted 1 Blank 3058 243- Distance 245 010-037 (cm) - As given 1 Blank 3058 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form 246 Smallest Read Satisfactorily 1 - Read satisfactorily 1 Blank 3058 247- Number Wrong 248 00 - As given 1 Blank 3058 Selection 250 (12 possible words) 249 Attempted 1 - Attempted 0 Blank 3059 250- Distance 252 010-065 (cm) - As given 0 Blank 3059 253 Smallest Read Satisfactorily 1 - Read satisfactorily 0 Blank 3059 254- Number Wrong 255 00-73 - As given 0 Blank 3059 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form Selection 200 (29 possible words) 256 Attempted 1 - Attempted 0 Blank 3059 257- Distance 259 010-065 (cm) - As given 0 Blank 3059 260 Smallest Read Satisfactorily 1 - Read satisfactorily 0 Blank 3059 261- Number Wrong 262 00-73 - As given 0 Blank 3059 Selection 150 (37 possible words) 263 Attempted 1 - Attempted 8 Blank 3051 264- Distance 266 041-054 (cm) - As given 8 Blank 3051 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form 267 Smallest Read Satisfactorily 1 - Read satisfactorily 0 Blank 3059 268- Number Wrong 269 00-24 - As given 8 Blank 3051 Selection 125 (44 possible words) 270 Attempted 1 - Attempted 19 Blank 3040 271- Distance 273 032-057 (cm) - As given 18 888 - Blank, but applicable 1 Blank 3040 274 Smallest Read Satisfactorily 1 - Read satisfactorily 1 Blank 3058 275- Number Wrong 276 00-24 - As given 19 Blank 3040 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form Selection 100 (73 possible words) 277 Attempted 1 - Attempted 112 Blank 2947 278- Distance 280 005-070 (cm) - As given 112 Blank 2947 281 Smallest Read Satisfactorily 1 - Read satisfactorily 17 Blank 3042 282- Number Wrong 283 00-06 - As given 112 Blank 2947 Selection 75 (122 possible words) 284 Attempted 1 - Attempted 989 Blank 2070 285- Distance 287 006-073 (cm) - As given 987 888 - Blank, but applicable 2 Blank 2070 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form 288 Smallest Read Satisfactorily 1 - Read satisfactorily 66 Blank 2993 289- Number Wrong 291 000-114 - As given 984 888 - Blank, but applicable 1 Blank 2074 Selection 50 (308 possible words) 292 Attempted 1 - Attempted 2860 Blank 199 293- Distance 295 006-068 (cm) - As given 2860 Blank 199 296 Smallest Read Satisfactorily 1 - Read satisfactorily 2786 Blank 273 297- Number Wrong 299 000-094 - As given 2852 Blank 207 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form KEENEY READING CARDS (BOTH EYES) Selection 130 (11 possible words) 300 Attempted 1 - Attempted 9 Blank 3050 301- Distance 303 037-059 (cm) - As given 9 Blank 3050 304 Smallest Read Satisfactorily 1 - Read satisfactorily 1 Blank 3058 305- Number Wrong 306 00 - As given 9 Blank 3050 Selection 120 (11 possible words) 307 Attempted 1 - Attempted 26 Blank 3033 308- Distance 310 028-062 (cm) - As given 26 Blank 3033 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form 311 Smallest Read Satisfactorily 1 - Read satisfactorily 6 Blank 3053 312- Number Wrong 313 00-01 - As given 25 Blank 3034 Selection 85 (17 possible words) 314 Attempted 1 - Attempted 120 Blank 2939 315- Distance 317 007-075 (cm) - As given 121 Blank 2938 318 Smallest Read Satisfactorily 1 - Read satisfactorily 20 Blank 3039 319- Number Wrong 320 00-13 - As given 121 Blank 2938 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form Selection 65 (25 possible words) 321 Attempted 1 - Attempted 344 Blank 2715 322- Distance 324 006-075 (cm) - As given 344 Blank 2715 325 Smallest Read Satisfactorily 1 - Read satisfactorily 45 Blank 3014 326- Number Wrong 327 00-20 - As given 343 Blank 2716 Selection 50 (30 possible words) 328 Attempted 1 - Attempted 1063 Blank 1996 329- Distance 331 006-077 (cm) - As given 1063 Blank 1996 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form 332 Smallest Read Satisfactorily 1 - Read satisfactorily 68 Blank 2991 333- Number Wrong 334 00-28 - As given 1060 Blank 1999 Selection 40 (32 possible words) 335 Attempted 1 - Attempted 2357 Blank 702 336- Distance 338 006-070 (cm) - As given 2359 Blank 700 339 Smallest Read Satisfactorily 1 - Read satisfactorily 324 Blank 2735 340- Number Wrong 341 00-29 - As given 2354 Blank 705 Selection 30 (50 possible words) 342 Attempted 1 - Attempted 2601 Blank 458 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form 343- Distance 345 011-070 (cm) - As given 2606 Blank 453 346 Smallest Read Satisfactorily 1 - Read satisfactorily 1389 Blank 1670 347- Number Wrong 348 00-49 - As given 2599 Blank 460 Selection 20 (61 possible words) 349 Attempted 1 - Attempted 1857 Blank 1202 350- Distance 352 009-060 (cm) - As given 1867 Blank 1192 353 Smallest Read Satisfactorily 1 - Read satisfactorily 1079 Blank 1980 354- Number Wrong 355 00-61 - As given 1867 Blank 1192 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form 356 Conditions Interferring with Test 1 - Cannot read English 40 2 - Cannot read 70 3 - Difficulty speaking 2 4 - Other 22 Blank 2925 NEAR VISION (FOR NON-ENGLISH OR ILLITERATES) 357 With or Without Correction 1 - Wears glasses for test 43 2 - Wears contact lenses for test 0 3 - Forgot (glasses, contact lenses) 7 4 - Does not wear either glasses or contact lenses 58 Blank 2951 TEST USING SLOAN LETTERS (BOTH EYES) Selection 500 (4 errors allowed) 358- Distance 360 010-065 (cm) - As given 0 Blank 3059 361 Score 1 - Completed 0 Blank 3059 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form Selection 350 (4 errors allowed) 362- Distance 364 010-065 (cm) - As given 0 Blank 3059 365 Score 1 - Completed 0 Blank 3059 Selection 250 (4 errors allowed) 366- Distance 368 010-065 (cm) - As given 0 Blank 3059 369 Score 1 - Completed 0 Blank 3059 Selection 200 (4 errors allowed) 370- Distance 372 010-065 (cm) - As given 0 Blank 3059 373 Score 1 - Completed 0 Blank 3059 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form Selection 150 (4 errors allowed) 374- Distance 376 037-039 (cm) - As given 2 Blank 3057 377 Score 1 - Completed 0 Blank 3059 Selection 125 (4 errors allowed) 378- Distance 380 029-048 (cm) - As given 7 Blank 3052 381 Score 1 - Completed 2 Blank 3057 Selection 100 (4 errors allowed) 382- Distance 384 029-056 (cm) - As given 15 Blank 3044 385 Score 1 - Completed 0 Blank 3059 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form Selection 75 (4 errors allowed) 386- Distance 388 029-064 (cm) - As given 50 Blank 3009 389 Score 1 - Completed 5 Blank 3054 Selection 50 (4 errors allowed) 390- Distance 392 021-068 (cm) - As given 101 Blank 2958 393 Score 1 - Completed 73 Blank 2986 TEST USING KEENEY LETTERS (BOTH EYES) Selection 130 (4 errors allowed) 394- Distance 396 040-076 (cm) - As given 3 Blank 3056 397 Score 1 - Completed 1 Blank 3058 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form Selection 120 (4 errors allowed) 398- Distance 400 027-069 (cm) - As given 11 Blank 3048 401 Score 1 - Completed 2 Blank 3057 Selection 85 (4 errors allowed) 402- Distance 404 030-072 (cm) - As given 20 Blank 3039 405 Score 1 - Completed 1 Blank 3058 Selection 60 (4 errors allowed) 406- Distance 408 028-060 (cm) - As given 26 Blank 3033 409 Score 1 - Completed 2 Blank 3057 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form Selection 50 (4 errors allowed) 410- Distance 412 024-071 (cm) - As given 51 Blank 3008 413 Score 1 - Completed 6 Blank 3053 Selection 40 (4 errors allowed) 414- Distance 416 022-073 (cm) - As given 80 Blank 2979 417 Score 1 - Completed 20 Blank 3039 Selection 30 (4 errors allowed) 418- Distance 420 018-078 (cm) - As given 79 Blank 2980 421 Score 1 - Completed 31 Blank 3028 Tape Control Loc. ITEM DESCRIPTION & CODES Counts HANES I Data Source Vision Testing Recording Form Selection 20 (4 errors allowed) 422- Distance 424 016-048 (cm) - As given 49 Blank 3010 425 Score 1 - Completed 25 Blank 3034 426- Angle of Visual Acuity (Sloan) 429 Non-Illiterate 0074-0946 - As given 2863 Blank 196 430- Angle of Visual Acuity (Keeney) 433 Non-Illiterate 0037-0567 - As given 2854 Blank 205 434- Angle of Visual Acuity (Sloan) 437 Illiterate 0083-0338 - As given 79 Blank 2980 438- Angle of Visual Acuity (Keeney) 441 Illiterate 0042-0353 - As given 88 Blank 2971 442- Blank - Data User Work Area 500 DETAILED NOTES, VISION DATA HANES is a multistage, stratified, probability sample of loose clusters of persons in land-based segments.In addition,HANES is composed of two distinct examination components--a nutrition screening examination (taken by all examinees) and a more detailed examination taken by a pre-selected subsample of all examinees,ages 25-74.For the nutrition screening examination,locations 1-35 and 1-65 constituted national probability samples and for the detailed examination, locations 1-35, 1-65, 66-100, and 1-100 all constitute national probability samples. In other words, HANES is composed of six distinct subsamples of the U.S. population. For a more detailed discussion of the sample design see Series 1, No. 10a. Since each of these six subsamples is a distinct subsample of the U.S. population, each subsample requires a different set of weights.The weights are based upon the probability of selection into the sample,adjustments for nonresponse and further adjustments to approximate the U.S. noninstitutionalized populations as of the midpoint of each subsample. In order to select all of those examinees in a particular subsample, i.e., received a particular exam component,it is necessary to exclude all examinees with a weight of zero or blank.It is also necessary to exclude all zero or blank weights because that is the only way to differentiate missing data due to nonresponse from data that is missing because the sample design dictated that a particular examinee was not supposed to receive a particular examination component. It is suggested that any analyses that are desired by the researcher be performed using the greatest number of examinees possible; that is, if the researcher is interested in an exam component of the nutrition screening examination he should use the weight and consequently the data from the 65 location subsample rather than the 35 location subsample. For the detailed examination, the researcher should use the 100 location subsample rather than one of the others. However, some exam components were only done in a particular subsample; for example, only at the first 35 locations. In that case, the researcher has no choice in selecting a particular subsample. There may be occasions when a researcher may want to make comparisons of estimates obtained from various subsamples. For example, the prevalence of some disease condition as estimated from the first 35 locations could be compared with an estimate based upon locations 66-100.The researcher may also want to formulate hypotheses using one subsample and test those hypotheses using another subsample. The data for this variable will not necessarily match the data gotten from the Medical History Supplement. These numbers are limited to persons who brought their corrective lenses to the examination but not all who have corrective lenses. The Medical History Supplement will show all who have corrective lenses. DETAILED NOTE Positions 226-233 Errors Code Allowed Time Chart 00 0 400 K 01 0 200 K 02 0 160 DV 03 0 125 ZS 04 2 100 ORN-KH 05 0 80 DV 06 1 60 HVC 07 1 50 ZHVD 08 1 40 OCVR 09 2 30 HOCRDS 10 2 25 KDVRZCOS 11 3 20 VRNHZDCSKO 12 3 16 ZSVDKHNORC The above chart was extracted from the examinee's recording form found in the National Center for Health Statistics' collection and procedures publication 10c. The word "corrected" distance vision is used instead of distance vision "with correction." These two terms have the same meaning; that is, referring to those examinees who were wearing some form of correction, (i.e., glasses, contact lenses, etc.) during the examination.The chart used to identify the examinee's visual acuity is shown in Attachment A. "Usual correction" refers to the examinee's normal visual status.If he wore some type of corrective lenses to the examination center, he was examined wearing the corrective lenses. If he did not have his corrective lenses,he was coded as "blank." The chart used to identify the examinee's visual acuity is shown in Attachment A. DETAILED NOTES POSITIONS 426-441 Since the distances at which the different cards were read were recorded in centimeters, the angles of visual acuity were calculated in the following manner: IVA (angle of visual acuity) SIZE (letter size of chart read) d (distance in centimeters) IAVA = (SIZE)/d (100) + 0.5 The addition of 0.5 makes the result an integer. The angles of visual acuity should be written with two digits after the decimal point. Therefore, for example, a person who reaches his satisfactory level when reading card 120 with a distance of 35 cms.would subtend an angle of 8.71 degrees, not 871 degrees; nevertheless, the value 871 is written on the tape (convention being not to punch decimal points on the tape). ATTACHMENT A ATTACHMENT A > a. With Correction > b. Without Correction > > Both Eyes > Both Eyes > > > > Number> Score > > > Number > Score > > > > of > Mark (X) > > > of > Mark (X)> > > > Errors> Only One > > > Errors > Only One> > Chart > Line> Allowed> Box > Chart > Line> Allowed > Box > > (a) > (b)> (c) > (d) > (a) > (b)> (c) > (d) > > > > > > > > > > >BIG L > > > 100 >BIG L > > > 101 > > > > > > > > > > >K > 400 > 0 > 00 >K > 400 > 0 > 00 > >K > 200 > 0 > 01 >K > 200 > 0 > 01 > >DV > 160 > 0 > 02 >DV > 160 > 0 > 02 > >ZS > 125 > 0 > 03 >ZS > 125 > 0 > 03 > >ORN -KH > 100 > 2 > 04 >ORN -KH > 100 > 2 > 04 > > > > > > > > > > >DV > 80 > 0 > 05 >DV > 80 > 0 > 05 > >HVC > 60 > 1 > 06 >HVC > 60 > 1 > 06 > >ZHVD > 50 > 1 > 07 >ZHVD > 50 > 1 > 07 > >OCVR > 40 > 1 > 08 >OCVR > 40 > 1 > 08 > >HOCRDS > 30 > 2 > 09 >HOCRDS > 30 > 2 > 09 > >KDVRZCOS > 25 > 2 > 10 >KDVRZCOS > 25 > 2 > 10 > >VRNHZDCSKO> 20 > 3 > 11 >VRNHZDCSKO> 20 > 3 > 11 > >ZSVDKHNORC> 16 > 3 > 12 >ZSVDKHNORC> 16 > 3 > 12 > > > ATTACHMENT A > c. With Usual Correction > > (1) Left eye -- (Odd numbers first) > (2) Right eye--(Even numbers first)> > > > Number> Score > > > Number > Score > > > > of > Mark (X) > > > of > Mark (X)> > > > Errors> Only One > > > Errors > Only One> > Chart > Line> Allowed> Box > Chart > Line> Allowed > Box > > (a) > (b)> (c) > (d) > (a) > (b)> (c) > (d) > > > > > > > > > > >BIG L > > > 102 >BIG L > > > 103 > > > > > > > > > > >K > 400 > 0 > 00 >K > 400 > 0 > 00 > >K > 200 > 0 > 01 >K > 200 > 0 > 01 > >DV > 160 > 0 > 02 >DV > 160 > 0 > 02 > >ZS > 125 > 0 > 03 >ZS > 125 > 0 > 03 > >ORN -KH > 100 > 2 > 04 >ORN -KH > 100 > 2 > 04 > > > > > > > > > > >DV > 80 > 0 > 05 >DV > 80 > 0 > 05 > >HVC > 60 > 1 > 06 >HVC > 60 > 1 > 06 > >ZHVD > 50 > 1 > 07 >ZHVD > 50 > 1 > 07 > >OCVR > 40 > 1 > 08 >OCVR > 40 > 1 > 08 > >HOCRDS > 30 > 2 > 09 >HOCRDS > 30 > 2 > 09 > >KDVRZCOS > 25 > 2 > 10 >KDVRZCOS > 25 > 2 > 10 > >VRNHZDCSKO> 20 > 3 > 11 >VRNHZDCSKO> 20 > 3 > 11 > >ZSVDKHNORC> 16 > 3 > 12 >ZSVDKHNORC> 16 > 3 > 12 > > >
