Conclusions
Despite the limitations of, and heterogeneity in, the
data, there is suggestive evidence that psychoeducation
is effective in preventing relapse in bipolar
disorder, with the strongest evidence for reducing
overall and manic relapse. Greatest efficacy was
found in studies with a group format, which also
had a longer follow-up and more hours of therapy;
these findings should inform clinical practice and
guide future research. It is now important to investigate
mediating mechanisms to be able to optimize
efficacy and personalize treatment