Competition and health plan performance: evidence from health maintenance organization insurance markets.

Dennis Scanlon; Shailender Swaminathan; Michael Chernew; James E. Bost; John Shevock

Study

Competition and health plan performance: evidence from health maintenance organization insurance markets.

April 27, 2005

Scanlon D, Swaminathan S, Chernew M, et al. Med Care. 2005;43(4):338-346.

View more articles from the same authors.

This study of 341 health maintenance organizations found that plans in markets with greater competition showed inferior performance on three of six standard quality measures. While the cross-sectional design does not permit causal inferences, these findings argue against the frequently encountered view that greater competition will foster improvements in safety and quality of care.

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