Effect of brief transdiagnostic cognitive behavioural group therapy on anxiety and depressive symptoms in pregnant women

Background: Research has shown that mental health plays an essential role during pregnancy since factors such as depression and anxiety can have adverse effects on the mother, the birthing process, the developing fetus, and the development of the child. It is, therefore, vital to increase the availability of evidence-based treatment options for women during pregnancy. Objective: The purpose of this study was to evaluate the effectiveness of a six-week transdiagnostic cognitive behavioural group therapy (TCBGT) adapted to the specific needs of pregnant women. Method: Data from 174 pregnant women, 20 to 47 years of age (M = 30), who had attended the TCBGT in 2018-2020 was used in the study. The TCBGT was scheduled for six consecutive weeks, one session per week for two hours. The primary outcome variables included anxiety (GAD-7) and depressive (EPDS) symptoms administered three times during treatment. To evaluate the effectiveness of the TCBGT treatment, a repeated measure intention to treat (ITT) ANOVA was conducted. Clinical significance was assessed by using the reliable change index. Results: A significant effect was indicated both on depressive symptoms p = .001 and anxiety symptoms p = .001. Conclusion: These findings suggest that a brief transdiagnostic cognitive behavioural group therapy (TCBGT) tailored to pregnant women can reduce symptoms of depression and anxiety during the prenatal period. A relatively high drop-out must also be acknowledged. Keywords: Anxiety, depression, pregnancy, prenatal, CBT, Transdiagnostic Cognitive Behavioural Therapy, primary care, GAD-7, EPD