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Does cost sharing really reduce inappropriate prescriptions among the elderly?

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  • Costa Font, Joan
  • Gemmill Toyama, Marin

Abstract

Improving prescription drug quality is an essential health policy goal in modern health systems, though evidence on the available instruments to attain such a goal are scarce. Cost sharing has an arguable role in improving the likelihood of an individual obtaining an appropriate prescription. This paper empirically examines the effect of cost sharing for prescription drugs in some dimensions of medication-related quality, namely the probability of inappropriate prescription drug use. Using data from United States seniors from 1996 to 2005, we explore various specifications of the probability of obtaining an inappropriate prescription that corrects for sample selection, endogeneity, and unobserved heterogeneity. Our results suggest a small, but measurable, negative price elasticity for inappropriate drug use to average out-of-pocket drug costs. That is, we find that user fees reduce the use of inappropriate medications, however the elasticity of cost sharing is found to be lower than that of drugs in general. A relatively close to zero price elasticity suggests that expected prescription quality improvements from co-payments are small in the light of our evidence.

Suggested Citation

  • Costa Font, Joan & Gemmill Toyama, Marin, 2011. "Does cost sharing really reduce inappropriate prescriptions among the elderly?," Health Policy, Elsevier, vol. 101(2), pages 195-208, July.
    • Handle: RePEc:eee:hepoli:v:101:y:2011:i:2:p:195-208
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    Cited by:

    1. SeungHoon Han & Hosung Sohn, 2023. "The short-term effects of fixed copayment policy on elderly health spending and service utilization: evidence from South Korea’s age-based policy using exact date of birth," International Journal of Health Economics and Management, Springer, vol. 23(2), pages 255-279, June.
    2. Raúl Del Pozo-Rubio & Isabel Pardo-García & Francisco Escribano-Sotos, 2020. "Financial Catastrophism Inherent with Out-of-Pocket Payments in Long Term Care for Households: A Latent Impoverishment," IJERPH, MDPI, vol. 17(1), pages 1-19, January.

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