title: Disenrollment patterns in Medicare HMOs: a preliminary analysis.
abstract: This paper examines disenrollment patterns of 17 Medicare Competition Demonstration HMOs during 1984. Characteristics of HMO disenrollees for a sample of Medicare beneficiaries from two surveys conducted in early 1985 and 1986 are also examined. These data provide a preliminary, descriptive analysis of the nature and the implications of Medicare HMO disenrollment.
mesh_terms: D003625:Data Collection; D005069:Evaluation Studies as Topic; D006279:Health Maintenance Organizations / Q000706:statistics & numerical data*; D015273:Insurance Selection Bias; D006278:Medicare / Q000458:organization & administration*; D014481:United States