title: Attrition in substance abuse comparative treatment research: the illusion of randomization.
authors.affiliation: Department of Psychology, Northwestern University, Evanston, IL 60208.
authors.forename: K I
authors.initials: KI
authors.lastname: Howard
authors.forename: W M
authors.initials: WM
authors.lastname: Cox
authors.forename: S M
authors.initials: SM
authors.lastname: Saunders
mesh_terms: D006801:Humans; D010352:Patient Dropouts; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D012107:Research Design; D019966:Substance-Related Disorders / Q000628:therapy*