IPA/HMO cap contracts more profitable, but some still lose money.
D002204:Capitation Fee / Q000706:statistics & numerical data*; D003284:Contract Services / Q000191:economics; D004470:Economics, Medical; D017598:Efficiency, Organizational; D006279:Health Maintenance Organizations / Q000191:economics*; D007182:Income; D007193:Independent Practice Associations / Q000191:economics*; D013038:Specialization; D014481:United States