Multi-unit providers survey--HMOs/PPOs. Managed-care growth continued in 1987 despite companies' poor operating results.
D003625:Data Collection; D006279:Health Maintenance Organizations / Q000191:economics*; D007348:Insurance, Health / Q000191:economics*; D009096:Multi-Institutional Systems / Q000639:trends*; D011243:Preferred Provider Organizations / Q000191:economics*; D014481:United States