The Impact of Health Insurance Status on Treatment Intensity and Health Outcomes
This paper uses the abrupt changes in health insurance coverage at age 65 arising from the Medicare program eligibility rules to evaluate the impact of insurance status on treatment intensity and health outcomes. Drawing from several million hospital discharge records for the State of California, the authors begin by identifying a subset of patients who are admitted through the emergency room for non-deferrable conditions-diagnoses with the same daily admission rates on weekends and weekdays. Among this subset of patients there is no discernable rise in the number of admissions at age 65, suggesting that the severity of illness is similar for patients who are just under 65 and those who are just over 65. The fraction of patients in this group who lack health insurance, however, falls sharply at age 65, while the proportion with Medicare as their primary insurer rises. Tracking health-related outcomes of the group, they find significant increases in treatment intensity at the age 65 barrier, including increases in the number of procedures performed, and total list charges. They also find a rise in the probability that patients are transferred to other units within the same hospital, coupled with a reduction in the probability of discharge to home. Finally, they estimate a drop in the rate of re-admission within one month of the initial discharge.
|Date of creation:||May 2005|
|Date of revision:|
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- David Card & Carlos Dobkin & Nicole Maestas, 2004.
"The Impact of Nearly Universal Insurance Coverage on Health Care Utilization and Health: Evidence from Medicare,"
NBER Working Papers
10365, National Bureau of Economic Research, Inc.
- David Card & Carlos Dobkin & Nicole Maestas, 2004. "The Impact of Nearly Universal Insurance Coverage on Health Care Utilization and Health: Evidence from Medicare," Working Papers 197, RAND Corporation.
- Joseph J. Doyle Jr., 2005. "Health Insurance, Treatment and Outcomes: Using Auto Accidents as Health Shocks," NBER Working Papers 11099, National Bureau of Economic Research, Inc.
- Joseph J. Doyle, 2005. "Health Insurance, Treatment and Outcomes: Using Auto Accidents as Health Shocks," The Review of Economics and Statistics, MIT Press, vol. 87(2), pages 256-270, May.
- Manning, Willard G, et al, 1987. "Health Insurance and the Demand for Medical Care: Evidence from a Randomized Experiment," American Economic Review, American Economic Association, vol. 77(3), pages 251-77, June.
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