The Impact of Patient Cost-Sharing on the Poor: Evidence from Massachusetts
AbstractGreater patient cost-sharing could help reduce the fiscal pressures associated with insurance expansion by reducing the scope for moral hazard. But it is possible that low-income recipients are unable to cut back on utilization wisely and that, as a result, higher cost-sharing will lead to worse health and higher downstream costs through hospitalizations. We use exogenous variation in the copayments faced by low-income enrollees in the Massachusetts’ Commonwealth Care program to study these effects. We estimate separate price elasticities of demand by type of service (hospital care, drugs, outpatient care). Overall, we find price elasticities of about -0.15 for this low-income population — fairly similar to elasticities calculated for higher-income populations in other settings. These elasticities are somewhat larger for the chronically sick and older enrollees. A substantial portion of the decline in utilization comes from some patients cutting back on use completely, but we find no (detectable) evidence of offsetting increases in hospitalizations or emergency department visits in response to the higher copayments, either overall or for the chronically ill in particular.
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Bibliographic InfoPaper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 18023.
Date of creation: Apr 2012
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- I13 - Health, Education, and Welfare - - Health - - - Health Insurance, Public and Private
This paper has been announced in the following NEP Reports:
- NEP-ALL-2012-05-08 (All new papers)
- NEP-HEA-2012-05-08 (Health Economics)
- NEP-IAS-2012-05-08 (Insurance Economics)
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- Mariana Carrera & Dana Goldman & Geoffrey Joyce, 2013. "Heterogeneity in Cost-Sharing and Cost-Sensitivity, and the Role of the Prescribing Physician," NBER Working Papers 19186, National Bureau of Economic Research, Inc.
- Ed Westerhout & Kees Folmer, 2013. "Why it may hurt to be insured: the effects of capping coinsurance payments," CPB Discussion Paper 239, CPB Netherlands Bureau for Economic Policy Analysis.
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