Interventions and outcomes: notes on designing and implementing and experiment in health care.
D000368:Aged; D006285:Health Planning; D006707:Homes for the Aged; D006801:Humans; D009657:North Carolina; D009874:Operations Research; D011153:Population; D012107:Research Design; D012108:Research Personnel; D012959:Socioeconomic Factors; D014481:United States