Objectives
To assess the effects of psychoeducational interventions compared with standard levels of knowledge provision.
Search methods
We searched the Cochrane Schizophrenia Group Trials Register (February 2010).
We updated this search November 2012 and added 27 new trials to the awaiting assessment section.
Selection criteria
All relevant randomised controlled trials focusing on psychoeducation for schizophrenia and/or related seriousmental illnesses involving
individuals or groups. We excluded quasi-randomised trials.
Data collection and analysis
At least two review authors extracted data independently from included papers. We contacted authors of trials for additional and
missing data. We calculated risk ratios (RR) and 95% confidence intervals (CI) of homogeneous dichotomous data. We used a fixedeffects
model for heterogeneous dichotomous data. Where possible we also calculated the numbers needed to treat (NNT), as well as
weighted means for continuous data.