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Psychoeducation (PE) for schizophrenia and other psychotic disorders is widely adopted but insufficiently evaluated. So far, meta-analytic data has demonstrated efficacy for PE when interventions include family members. Whether PE directed solely at patients is also effective remains unclear. The current meta-analysis evaluates short- and long-term efficacy of PE with and without inclusion of families with regard to relapse, symptom-reduction, knowledge, medication adherence, and functioning. Randomized controlled trials comparing PE to standard care or non-specific interventions were included. A literature search in the Cochrane Library, PsycINFO and Medline retrieved 199 studies for closer examination, of which 18 studies, reporting on 19 comparisons, met the inclusion criteria. These studies were coded with regard to methodology, participants, interventions and validity. Effect sizes were integrated using …