Psychological treatment for family members of children with cancer: A systematic review and meta-analysis.

Positive effects of mild to moderate magnitude were found in the posttests for some outcome measures. Behavioral interventions seem to be the most promising. Interventions achieved the best results when they were long in duration and low in intensity and when they were applied to family members with young children who were undergoing medical treatment. At follow-up, the intervention benefits were diminished. The application of psychological interventions is recommended to mitigate the negative psychological repercussions in this population.