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This is a 2-digit numeric variable.


HIUNPERS is constructed by the State Health Access Data Assistance Center (SHADAC) at the University of Minnesota. HIUNPERS is the number of people within each "health insurance unit" (HIU) as indicated by HIUID.

Health insurance coverage, whether through an employer or a public program, is often based on family relationships. An individual with access to employer-sponsored coverage may be able to cover his or her spouse and children through that policy. Public coverage often considers family ties in determining program eligibility, especially for children and families. Many analysts and researchers have adopted the use of a "health insurance unit" (HIU) in studying insurance coverage so as to focus on those individuals who would likely be considered a "family unit" in determining eligibility for either private or public coverage. Individual assignment to an HIU is detailed in HIURULE.

For more information see "Defining 'Family' for Studies of Health Insurance Coverage".

The Stata and SAS code is available so that analysts who choose to can easily modify the HIU definition.

SHADAC has also provided information and example Stata and SAS code, available on their website, for using the HIU and FPG variables and replicating estimates available from the SHADAC Data Center.


This variable is comparable across all years.

Comparability with IPUMS-USA

This variable is comparable with IPUMS-USA.


  • All persons.


Years Jan Feb ASEC Apr May Jun Jul Aug Sep Oct Nov Dec
1988 – 2022 - - X - - - - - - - - -


This variable has no flags.

Unharmonized Variables

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