Improving the Medicare HMO payment formula to deal with biased selection.
D000367:Age Factors; D002204:Capitation Fee; D003256:Community Participation / Q000191:economics*; D003657:Decision Making; D005249:Fees and Charges; D005260:Female; D006279:Health Maintenance Organizations / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D006278:Medicare / Q000191:economics*; D011907:Rate Setting and Review / Q000379:methods*; D012044:Regression Analysis; D012737:Sex Factors; D014481:United States