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The Relation Between Managed Care Market Share and the Treatment of Elderly Fee-For-Service Patients with Myocardial Infarction

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  • Paul A. Heidenreich
  • Mark McClellan
  • Craig Frances
  • Laurence C. Baker
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    Abstract

    Managed care may affect medical treatments for non-managed-care patients if it alters local market structure or physician behavior. We investigate whether higher levels of overall managed care market share are associated with greater use of recommended therapies for fee-for-service patients with acute myocardial infarction using data on 112,900 fee-for-service Medicare beneficiaries residing in one of 320 metropolitan statistical areas, with age >= 65 years, and admitted with an acute myocardial infarction between February 1994 and July 1995 from the Cooperative Cardiovascular Project. After adjustment for patient characteristics, severity of illness, characteristics of the hospital of admission, specialty of treating physicians, and other area characteristics, patients treated in areas with high levels of managed care had greater relative use of beta-blockers during hospitalization and at discharge and aspirin during hospitalization and at discharge, consistent with more appropriate care. Patients in high HMO areas may be less likely to receive angiography when compared to areas with low levels of managed care, although this result was only marginally significant. In unadjusted comparisons, patients in high HMO market share areas had lower 30 day mortality, but there were no differences in 30 day mortality when all of the control variables were included in the model. We conclude that managed care can have widespread effects on the treatment of patients and the quality of care they receive, even for patients not enrolled in managed care organizations.

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    File URL: http://www.nber.org/papers/w8065.pdf
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    Bibliographic Info

    Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 8065.

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    Date of creation: Jan 2001
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    Publication status: published as Heidenreich, Paul A., Mark B. McClellan, Craig D. Frances, Laurence C. Baker. “The Relation Between Managed Care Market Share and the Treatment of Elderly Fee-For-Service Patients with Myocardial Infarction." The American Journal of Medicine 112, 3 (February 2002): 176-182.
    Handle: RePEc:nbr:nberwo:8065

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    References

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    1. David M. Cutler & Louise Sheiner, 1998. "Managed Care and the Growth of Medical Expenditures," NBER Chapters, in: Frontiers in Health Policy Research, volume 1, pages 77-116 National Bureau of Economic Research, Inc.
    2. Charles E. Phelps, 1992. "Diffusion of Information in Medical Care," Journal of Economic Perspectives, American Economic Association, vol. 6(3), pages 23-42, Summer.
    3. Baker, Laurence C., 1997. "The effect of HMOs on fee-for-service health care expenditures: Evidence from Medicare," Journal of Health Economics, Elsevier, vol. 16(4), pages 453-481, August.
    4. David M. Cutler & Mark McClellan, 1996. "The Determinants of Technological Change in Heart Attack Treatment," NBER Working Papers 5751, National Bureau of Economic Research, Inc.
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    Cited by:
    1. Katherine Baicker & Michael Chernew & Jacob Robbins, 2013. "The Spillover Effects of Medicare Managed Care: Medicare Advantage and Hospital Utilization," NBER Working Papers 19070, National Bureau of Economic Research, Inc.

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