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Codes and Frequencies

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For persons ages 18 and older in households that did not refuse to complete the National Health Interview Survey-Disability Survey (NHIS-D) Phase I questionnaire, DPIADLP indicates if the person got help and/or supervision for one or more instrumental activities of daily living (IADL) because of a physical, mental, or emotional problem.

IADLs include preparing meals for oneself, shopping for personal items (such as toilet items or medicine), managing money (such as keeping track of expenses and paying bills), using the telephone, doing heavy work around the house (such as scrubbing floors, washing windows, and heavy yard work), and doing light work around the house (such as doing dishes, straightening up, light cleaning, or taking out trash).


In 1994 and 1995, this variable is part of the Disability Supplement (NHIS-D) that collects information on disability. NHIS-D included two household interviews: in Phase I all members of sample families were screened for any indication of disability; in Phase II persons with any indication of disability were followed-up for additional information. Phase I includes sensory, communication, and mobility problems; health conditions; activities of daily living and independent activities of daily living; functional limitations; mental health; services and benefits; special health needs of children; early child development; education; relationship to respondent; and perceived disability. Phase II includes four Disability Followback Survey (DFS) questionnaires: one for children, one for adults, one for elderly persons (69 years of age and over) without any indication of disability (also called the Supplement on Aging or SOA; only in 1994), and one for persons with a history of polio.


There are no comparability issues.


  • 1994-1995: Persons age 18+ in the NHIS-D Phase I sample.


  • 1994-1995