NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

NBER Working Papers by Andrew Hildreth

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Working Papers

October 2001The Measurement of Medicaid Coverage in the SIPP: Evidence from California, 1990-1996
with David Card, Lara D. Shore-Sheppard: w8514
This paper studies the accuracy of reported Medicaid coverage in the Survey of Income and Program Participation (SIPP) using a unique data set formed by matching SIPP survey responses to administrative records from the State of California. Overall, we estimate that the SIPP underestimates Medicaid coverage in the California population by about 10 percent. Among SIPP respondents who can be matched to administrative records, we estimate that the probability someone reports Medicaid coverage in a month when they are actually covered is around 85 percent. The corresponding probability for low-income children is even higher - at least 90 percent. These estimates suggest that the SIPP provides reasonably accurate coverage reports for those who are actually in the Medicaid system. On the othe...

Published: Card, James, Andrew K. G. Hildreth and Lara Shore-Sheppard. “The Measurement of Medicaid Coverage in the SIPP: Evidence from California, 1990-1996." Journal of Business and Economic Statistics 22 (October 2004).

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