title: Medicare Advantage and the impact of Medicare  HMOs on inpatient utilization.
abstract: (1) Health maintenance organizations (HMOs) decrease inpatient utilization for Medicare enrollees. (2) California group and staff HMO enrollees used 18 percent fewer inpatient days than had they continued in Medicare fee-for-service (FFS) plans, with an 11 percent reduction for independent practice association (IPA) HMO enrollees.
authors.affiliation: Changes in Health Care Financing and Organization (HCFO), USA; jenny.minott@academyhealth.org.
authors.forename: Jenny
authors.initials: J
authors.lastname: Minott
mesh_terms: D018588:Fee-for-Service Plans; D006279:Health Maintenance Organizations / Q000458:organization & administration / Q000706:statistics & numerical data; D006761:Hospitals / Q000706:statistics & numerical data; D006801:Humans; D007297:Inpatients; D008329:Managed Care Programs; D006278:Medicare / Q000458:organization & administration / Q000706:statistics & numerical data; D014481:United States