Comparing Errors in Medicaid Reporting across Surveys: Evidence to Date
Article first published online: 20 JUL 2012
© Health Research and Educational Trust
Health Services Research
Volume 48, Issue 2pt1, pages 652–664, April 2013
How to Cite
Call, K. T., Davern, M. E., Klerman, J. A. and Lynch, V. (2013), Comparing Errors in Medicaid Reporting across Surveys: Evidence to Date. Health Services Research, 48: 652–664. doi: 10.1111/j.1475-6773.2012.01446.x
- Issue published online: 8 MAR 2013
- Article first published online: 20 JUL 2012
- Robert Wood Johnson Foundation
- Office of the Assistant Secretary for Planning and Evaluation
- Centers for Medicare and Medicare Services
- National Center for Health Statistics
- U.S. Census Bureau
- Medicaid undercount;
- validation study;
- survey and administrative data;
- health insurance coverage
To synthesize evidence on the accuracy of Medicaid reporting across state and federal surveys.
All available validation studies.
Compare results from existing research to understand variation in reporting across surveys.
Data Collection Methods
Synthesize all available studies validating survey reports of Medicaid coverage.
Across all surveys, reporting some type of insurance coverage is better than reporting Medicaid specifically. Therefore, estimates of uninsurance are less biased than estimates of specific sources of coverage. The CPS stands out as being particularly inaccurate.
Measuring health insurance coverage is prone to some level of error, yet survey overstatements of uninsurance are modest in most surveys. Accounting for all forms of bias is complex. Researchers should consider adjusting estimates of Medicaid and uninsurance in surveys prone to high levels of misreporting.