This site contains links to the results of the multi-phase research project conducted by the University of Minnesota's State Health Access Data Assistance Center (SHADAC), the National Center for Health Statistics (NCHS), the Agency for Healthcare Research and Quality (AHRQ), the U.S. Department of Health and Human Services Assistant Secretary for Planning and Evaluation (ASPE), the Centers for Medicare and Medicaid Services (CMS), and the U.S. Census Bureau. The research is designed to explain why discrepancies exist between survey estimates of enrollment in Medicaid and the number of enrollees reported in state and national administrative data.
Phase I (Overview of Medicare and Medicaid Files)
Phase II (Comparing MSIS and the CPS ASEC, 2001-2002)
Phase III (Refinements in MSIS CPS ASEC Comparison)
Phase IV (Comparing MSIS and the NHIS, 2001-2002)
Phase V (Comparing MSIS and the CPS ASEC, 2002-2005)
Phase VI (The Medical Expenditure Panel Survey Household Component)