Codes and Frequencies
For persons without health insurance coverage, HISTOP4 indicates if a reason for not having coverage is the person's coverage stopped due to ineligibility because of the person's age or the person was no longer enrolled in school. Respondents were handed a card listing possible reasons for no insurance and were asked to specify up to five reason(s) or could specify 'other'. For all years, individuals with single service plans were asked for reasons for no insurance, because single service plans were not considered to be insurance plans.
Please see the Comparability tab for important information on changes to the universe and response categories over time.
For related variables, please use the IPUMS NHIS search function and drop-down menus.
In 1997, this question was only asked of persons who had no insurance and had been without insurance for less than 3 years. Beginning in 1998, the question was asked of persons without health insurance coverage or for whom it is unknown whether they were without health insurance. For 2000-forward, the universe includes all persons without health insurance coverage or whose only health insurance coverage is a single service plan.
Changes to the list of reasons that persons could provide for not having insurance coverage may affect this variable over time. It is possible that persons would be less likely to select this option when the list of other possible reasons for lack of insurance changes. Please see the Survey Text and Codes tabs for more information on response categories available over time.
For 1997 forward, the NCHS began editing responses regarding insurance coverage status (based on the plan name given by the respondent) to improve accuracy. Users are strongly encouraged to review the user notes Insurance Data Collection.
- 1997: Persons without health insurance coverage for less than 3 years.
- 1998-1999: Persons without health insurance coverage or for whom it is unknown whether they were without health insurance.
- 2000-2018: Persons without health insurance coverage or whose only health insurance coverage is a single service plan.
- 1997-2018 : PERWEIGHT