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Related Experiment Videos

Favorable selection in the Medicare+Choice program: new evidence.

L M Greenwald1, J M Levy, M J Ingber

  • 1Office of Strategic Planning, Health Care Financing Administration, Baltimore 21244, MD, USA. lgreenwald@hcfa.gov

Health Care Financing Review
|August 3, 2001
PubMed
Summary
This summary is machine-generated.

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Medicare managed care plans show favorable selection bias. Analysis of inpatient data reveals managed care enrollees have lower predicted healthcare costs than fee-for-service beneficiaries.

Area of Science:

  • Health Services Research
  • Economics
  • Public Health Policy

Background:

  • Studying Medicare managed care favorable selection has been challenging due to a lack of direct enrollee data.
  • Previous research was limited by the unavailability of comprehensive inpatient encounter information.

Purpose of the Study:

  • To investigate the favorable-selection issue in Medicare managed care.
  • To analyze differences between managed care and fee-for-service (FFS) beneficiaries using newly available data.

Main Methods:

  • Utilized the first year of Balanced Budget Act (BBA)-mandated inpatient encounter data.
  • Compared actual managed care enrollees with fee-for-service (FFS) beneficiaries.
  • Analyzed risk factors and predicted costs for both populations.

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Main Results:

  • Significant differences were observed between Medicare managed care and FFS populations.
  • Managed care enrollees exhibited a clear bias toward beneficiaries with lower predicted healthcare costs.
  • Average risk factors were notably different between the two groups.

Conclusions:

  • The findings indicate a favorable selection bias in Medicare managed care plans.
  • This bias suggests managed care plans enroll beneficiaries expected to be less costly.
  • The availability of BBA-mandated data provides crucial insights into managed care utilization patterns.