NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

NBER Working Papers by Donna Friedsam

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Working Papers

May 2011Estimates of Crowd-Out from a Public Health Insurance Expansion Using Administrative Data
with Laura Dague, Thomas DeLeire, Daphne Kuo, Lindsey Leininger, Sarah Meier, Kristen Voskuil: w17009
We use a combination of administrative and survey data to estimate the fraction of individuals newly enrolled in public health coverage (Wisconsin’s combined Medicaid and CHIP program) that had access to private, employer-sponsored health insurance at the time of their enrollment and the fraction that dropped this coverage. We estimate that after expansion of eligibility for public coverage, approximately 20% of new enrollees had access to private health insurance at the time of enrollment and that only 8% dropped this coverage (with the remaining 12% having both private and public coverage). We also identify an “upper bound” estimate, which suggests that the percentage of new enrollees with private insurance coverage at the time of enrollment is, at most, 27%. These estimates of crowd-o...

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