A Meta-Analysis Comparing the Effectiveness of Psychological Intervention and Drug Therapy on Obsessive-Compulsive Disorder Symptoms

In recent years, experts in the field of obsessive-compulsive disorder are trying to measure and compare the validity and efficiency of psychological interventions and drug therapy. In this regard, a meta-analysis integrating results of different researches demonstrates the effect size of treatments. This study aims to study the impact of psychological interventions and drug therapy on reducing symptoms of obsessive-compulsive patients. For this purpose, 40 accepted researches were selected and meta-analysis was performed on them. Research instrument was a checklist of meta-analysis.The effect size of psychological interventions on reducing obsessive-compulsive symptoms was 1/88(p ≤ 0.001) and for drug therapy 1/11 (p ≤ 0.001). According to Cohen's effect size, psychological interventions and drug therapy have a high impact on reducing symptoms of obsessive-compulsive disorder.