Social security policy formulation and health research.
D000368:Aged; D004469:Economics, Hospital; D005380:Financing, Government; D005382:Financing, Personal; D006077:Government Agencies; D005102:Health Expenditures; D006285:Health Planning; D006801:Humans; D007348:Insurance, Health; D006278:Medicare; D008962:Models, Theoretical; D009042:Motivation; D010548:Personal Health Services / Q000706:statistics & numerical data; D012106:Research; D012943:Social Security; D014481:United States