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Conventional estimates of the number of uninsured Californians are derived from the Current Population Survey (CPS). Unfortunately, CPS estimates of the number of people receiving Medi-Cal and welfare (AFDC/CalWORKs) are well below the numbers implied by official Medi-Cal records, suggesting that the conventional estimates of the number of uninsured Californians (and their characteristics) are seriously flawed. To improve understanding of these issues, the California HealthCare Foundation (through its then separate the Medi-Cal Policy Institute-MCPI) and the U.S. Department of Health and Human Services, Administration for Children and Families (DHHS-ACF) funded RAND to match CPS data to individual-level administrative data for the Medi-Cal program. With the cooperation of the California Department of Health Services (CDHS), the U.S. Bureau of the Census, and the California Census Research Data Center (CCRDC), that match was performed. This document describes the findings of the analysis of those matched data.
Table of Contents
Chapter One
Introduction
Chapter Two
Medi-Cal, the CPS, The MEDS, and Under-Reporting
Chapter Three
The Matched Data
Chapter Four
Extrapolating to the Full Data
Chapter Five
New Estimates of the Uninsured
Chapter Six
New Estimates of Medi-Cal and Welfare Enrollment Rates
Chapter Seven
Conclusion
Appendix A
Detailed Notes on File Construction and Matching
Appendix B
Regression Specification for Response Errors
This research was jointly funded by the California Health Care Foundation and the U.S. Department of Health and Human Services, Administration for Children and Families and was performed under the auspices of RAND Labor and Population.
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