title: Perspectives. Regression to the mean: PPOs, risk-sharing are market mainstays.
authors.forename: M
authors.initials: M
authors.lastname: Clemmitt
mesh_terms: D000368:Aged; D003625:Data Collection; D006264:Health Benefit Plans, Employee / Q000706:statistics & numerical data*; D006279:Health Maintenance Organizations / Q000706:statistics & numerical data; D006801:Humans; D006278:Medicare / Q000706:statistics & numerical data; D011243:Preferred Provider Organizations / Q000706:statistics & numerical data*; D020414:Risk Sharing, Financial / Q000706:statistics & numerical data*; D014481:United States