Medicaid Undercount Project
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Medicaid Undercount Project – SNACC
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.
SNACC Phase Reports
Phase I (Overview of Medicare and Medicaid Files)
- Full Report [PDF - 442k]
- Tables [PDF - 203k]
Phase II (Comparing MSIS and the CPS ASEC, 2001-2002)
- Executive Summary [PDF - 43k]
- Full Report (Revised) [PDF - 25M]
- Tables (Revised) [PDF - 25M]
Phase III (Refinements in MSIS CPS ASEC Comparison)
- Executive Summary [PDF - 2M]
- Full Report [PDF - 2M]
- Tables [PDF - 1M]
Phase IV (Comparing MSIS and the NHIS, 2001-2002)
- Full Report [PDF - 4M]
