title: Prior treatment and its effect on outcome.
authors: Peter
authors: P
authors: Barglow
mesh_terms: D001008:Anxiety Disorders / Q000523:psychology / Q000628:therapy*; D015928:Cognitive Behavioral Therapy / Q000379:methods; D057186:Comparative Effectiveness Research / Q000706:statistics & numerical data; D006801:Humans; D015990:Placebo Effect; D010919:Placebos; D013811:Psychotherapeutic Processes; D011613:Psychotherapy / Q000379:methods*; D016032:Randomized Controlled Trials as Topic / Q000592:standards / Q000706:statistics & numerical data; D012107:Research Design; D016896:Treatment Outcome
chemical_list: D010919:Placebos