Designing health insurance for the elderly.
D000368:Aged; D002908:Chronic Disease / Q000191:economics; D003363:Cost Control / Q000379:methods; D003669:Deductibles and Coinsurance / Q000191:economics*; D006295:Health Resources / Q000706:statistics & numerical data*; D006299:Health Services for the Aged; D006760:Hospitalization / Q000191:economics; D006801:Humans; D007348:Insurance, Health / Q000191:economics*; D006278:Medicare / Q000191:economics*; D018803:Models, Economic; D014481:United States