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. 1995 Fall;17(1):85–97.

Table 4. Characteristics of Urban/Rural HMOs With Medicare Risk Contracts.

HMO Averages Some Rural Medicare Enrollees No Rural Medicare Enrollees
Number of HMOs 17 21
Model Type (Percent)
 IPAs 31 52
 Network 6 19
 Staff 6 5
 Group 25 10
 Mixed 31 14
Medicare Enrollment 11,628 7,089
Total Enrollment 116,772 119,062
For-Profit (Percent) 44 52
Plan Age (Years) 15 12

NOTES: HMO is health maintenance organization. IPA is individual practice association.