Cognitive behavioural therapy for depression in women with PCOS: systematic review and meta-analysis.

Polycystic ovary syndrome (PCOS) is a common endocrine disorder with physical and psychological complaints, especially high depression scores. Cognitive behavioural therapy (CBT) is the first-line psychological treatment for depression. The objective of this study was to examine the effect of different types of CBT interventions and the effects on depression scores in women with PCOS. A literature search was performed in six databases up to July 2020. Studies published in English, in which depression scores were compared between groups during a CBT intervention in women with PCOS, were included. A total of 4854 studies were identified, of which eight studies were included in the systematic review and five in the meta-analysis. CBT ranged from 8 to 52 weeks and involved between 8 and 20 sessions. An overall Cohen's d effect size of 1.02 (95% confidence interval 0.02-2.02) was found in favour of CBT compared with standard care. To conclude, most psychological interventions applying CBT are effective in lowering depression scores in women with PCOS. These results should be interpreted with caution due to methodological differences and quality of the studies. More clinical trials are needed to assess how many sessions of CBT are necessary to treat depression in women with PCOS.