SUPP2WT is a 9-digit numeric variable.
0: Not in Universe
SUPP2WT is an IPUMS NHIS-constructed variable that harmonizes the sampling weights for a select subset of the supplements of the original NHIS public use files. In this case, harmonization refers to putting weights from various years and source supplement files into a single, consistently named variable.
For certain supplements, SUPP2WT represents a randomly selected person from a household; for example, a sample person age 18 and older was selected for the 1988 occupational health supplement. In other cases, the supplement survey was administered to all persons; to select one example, all persons interviewed in the 1990 core survey were eligible for the assisted devices supplement. SUPP2WT represents the inverse probability of selection into a supplement, adjusted for non-response with additional post-stratification adjustments for age, race/ethnicity, and sex using the Census Bureau's population control totals.
Beginning in 2011, SUPP2WT is associated with variables from the family disability supplement.
Users should review the documentation for extracted variables--most notably the "Weights" section toward the top of each variable description--to ascertain which weight is the appropriate choice for a given survey year. See the User Notes on the use of sampling weights for additional information.
- 1979: Sample persons.
- 1988; 1989: Sample persons age 18+.
- 1990: Persons with a completed assistive devices questionnaire.
- 1991: Sample persons age 18-44.
- 1992: Sample persons age 12-21.
- 1993: Sample persons age 18+ in Qt 3 and Qt 4.
- 1994-1995: Half of sample persons age 18+.
- 2011-2017: Adults who received the Family Disability questions.
- 1979, 1988-1995, 2011-2017
- 2011-2017 : SUPP2WT