1994-1995 National Health Interview Survey on Disability,
Complete Phase I
Since 1957, the National Center for Health Statistics (NCHS) annually conducts a National Health Interview Survey (NHIS) of the U.S. noninstitutionalized civilian population, which consists of approximately 122,000 individuals in 48,000 households. The NHIS consists of a core questionnaire and supplements. The core questionnaire is aimed at a continuous assessment and analysis of health trends in the United States, and its topics-basic health, socioeconomic and demographic data do not vary much across years. Each year, one or more supplements are added to this core questionnaire in order to reflect public health data needs.
National Health Interview Survey on Disability, Phase I (NHIS-D) was one of the supplements included in the NHIS for 1994 and 1995. The Phase I survey (January 1994-December 1995) was administered to 202,560 NHIS respondents along with the core questionnaire, and it gathered data on: (1) the prevalence and conditions of disability, and (2) demographic, socio-economic, health care, health insurance, and program characteristics of people with or without disabilities. The NHIS-D, Phase I was used as a screening device to determine eligibility for Phase II, which collected specific data on service use and expenditures as well as aspects of daily life of people with disabilities. RADIUS staff merged and archived the 199 4 and 1995 NHIS core data and the Phase I disability supplement as Data Set 35. Data Set 36 contains hierarchical data on all physical or mental conditions claimed by respondents on the core questionnaires and disability supplement. Data Set 35 contains 929 variables and 202,560 cases. Data Set 36 contains 159 variables and 81,862 cases. The follow-up survey data on disability (1994-1995 NHIS-D, Phase II) is archived as RADIUS Data set 37-39 and include ID variables for linking with Phase I data sets.