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The Integrated Health Interview Series (IHIS) is a public data repository that harmonizes four decades of the National Health Interview Survey (NHIS). The NHIS is the premier source of information on the health of the U.S. population. Since 1957 the survey has collected information on health behaviors, health conditions, and health care access. The long running time series of the NHIS is a powerful tool for health research. However, efforts to fully utilize its time span are obstructed by difficult documentation, unstable variable and coding definitions, and non-ignorable sample re-designs. To overcome these hurdles the IHIS, a freely available and web-accessible resource, provides harmonized NHIS data from 1969-2010. This paper describes the challenges of working with the NHIS and how the IHIS reduces such burdens. To demonstrate one potential use of the IHIS, utilization patterns in the U.S. from 1972-2008 are examined.
The Massachusetts health reform initiative enacted into law in 2006 continued to fare well in 2010, with uninsurance rates remaining quite low and employer-sponsored insurance still strong. Access to health care also remained strong, and first-time reductions in emergency department visits and hospital inpatient stays suggested improvements in the effectiveness of health care delivery in the state.
SHADAC Research Assistant Jessie Kemmick-Pintor and Lynn Blewett published an article in the October 2011 issue of Minnesota Physician as part of the journal’s special focus section on health reform. "Immigrant access to health care" reviews the key provisions of national legislation pertaining to access to care for immigrants.
Research Objective: To determine whether the imputation procedure used to replace missing data by the U.S. Census Bureau produces bias in the estimates of health insurance coverage in the Current Population Survey's (CPS) Annual Social and Economic Supplement (ASEC).
The State Health Access Data Assistance Center (SHADAC) is a program of the Robert Wood Johnson Foundation and a part of the Health Policy and Management Division of the School of Public Health at the University of Minnesota