title: Difficulties inherent in the interpretation and performance of randomized controlled clinical trials.
authors.forename: Scott
authors.initials: S
authors.lastname: Haldeman
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Gatchel
authors.forename: Nikolai
authors.initials: N
authors.lastname: Bogduk
mesh_terms: D019317:Evidence-Based Medicine / Q000592:standards* / Q000639:trends; D005260:Female; D006801:Humans; D008297:Male; D018579:Patient Selection; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D013122:Spinal Diseases / Q000175:diagnosis / Q000628:therapy*; D017749:Total Quality Management; D014481:United States