SECOND NATIONAL HEALTH AND NUTRITION EXAMINATION SURVEY (NHANES II)
Project Start Date02/01/1980
Project Completion Date (Actual/Projected)02/01/1986
The second National Health and Nutrition Examination Survey, NHANES II, is a nationwide probability sample of 27,801 persons from 6 months 74 years of age. From this sample, 25,286 people were interviewed and 20,322 people were examined, resulting in an overall response rate of 73 percent. Because children and persons classified as living at or below the poverty level were assumed to be at special risk of having nutritional problems, they were sampled at rates substantially higher than their proportions in the general population. Adjusted sampling weights were computed within 76 age-sex income groups in order to inflate the sample to closely reflect the target population at the midpoint of the survey. Data tapes from NHANES II are organized by subject matter. The data files comprising the NHANES II include a number of demographic and socioeconomic variables on each tape including age, gender, race, ethnicity, income, education, and marital status.
Data tape documentation includes general notes on the specific subject matter of the tape and brief statements about the use of NHANES II data, including discussion of possible sources of error, use of sampling weights, and variance estimation procedures. Detailed notes are provided to explain certain items included on the tape which are not self-explanatory or documented elsewhere. The web site for the NHANES study is provided in the downloads section to your left. Also, see Related Entries for other EIMS entries of NHANES studies.