A recent study1 compared the health of chronically ill patients treated in health maintenance organizations (HMOs) and fee for service systems (FFS).
"For elderly patients (those aged 65 years and older) treated under Medicare, declines in physical health were more common in HMOs than in FFS plans (54% vs 28%; P<.001)"Reference
1. Ware JE, Bayliss MS, Rogers WH, Kosinski M, Tarlow AR. Differences in 4-year health outcomes for the elderly and poor, chronically ill patients treated in HMO and fee-for-service systems. JAMA 1996;276: 1039-1047.
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