title: The missing data problem in meta-analyses.
authors.forename: Winfried
authors.initials: W
authors.lastname: Rief
authors.forename: Stefan G
authors.initials: SG
authors.lastname: Hofmann
mesh_terms: D015982:Bias; D006801:Humans; D001523:Mental Disorders / Q000628:therapy*; D015201:Meta-Analysis as Topic; D010352:Patient Dropouts / Q000706:statistics & numerical data; D011575:Psychoanalytic Therapy / Q000706:statistics & numerical data*; D011614:Psychotherapy, Brief / Q000706:statistics & numerical data*; D016896:Treatment Outcome