HARMONIZED DATA FROM U.S. NATIONAL HEALTH SURVEYS
IPUMS Health Surveys provide free survey data containing self-reported health and health care access information from the NHIS and MEPS data series.
NATIONAL HEALTH INTERVIEW SERIES
The National Health Interview Survey (NHIS) provides harmonized annual microdata from the 1960s to the present.
MEDICAL EXPENDITURE PANEL SURVEY
The Medical Expenditure Panel Survey (MEPS) provides harmonized microdata from the longitudinal survey of U.S. health care expenditures and utilization, covering the period 1996 to the present.