Managed care outlook. HMO members happier than those in POS plans.
D019538:Health Care Surveys; D006279:Health Maintenance Organizations / Q000592:standards* / Q000706:statistics & numerical data; D006801:Humans; D017060:Patient Satisfaction / Q000706:statistics & numerical data*; D011243:Preferred Provider Organizations / Q000592:standards* / Q000706:statistics & numerical data; D011787:Quality of Health Care; D014481:United States