Stats & facts. The many sentinels of health plan quality.
D003625:Data Collection; D006279:Health Maintenance Organizations / Q000592:standards* / Q000706:statistics & numerical data; D006801:Humans; D007255:Information Services; D006278:Medicare / Q000592:standards; D019984:Quality Indicators, Health Care / Q000706:statistics & numerical data*; D012952:Societies; D014481:United States