title: Quality improvement research: are randomised trials necessary?
authors.affiliation: Epidemiology & Biostatistics, Medical School, Case Western University, Cleveland, Ohio, USA. dvn@case.edu
authors.forename: D
authors.initials: D
authors.lastname: Neuhauser
authors.forename: M
authors.initials: M
authors.lastname: Diaz
mesh_terms: D006302:Health Services Research; D006801:Humans; D011785:Quality Assurance, Health Care; D019984:Quality Indicators, Health Care; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D012680:Sensitivity and Specificity; D017749:Total Quality Management; D014481:United States