Quality Assessment of Studies Evaluating Cognitive Behavioural Therapy for Insomnia in Populations with PTSD: A Systematic Review

Objective: This systematic review aims to evaluate the quality of intervention studies assessing CBT-I in adult populations with PTSD. Specifically examining overall quality, specific design elements and trends over time. Method: n > 1 studies assessing CBT-I in adult populations with PTSD were included. The Randomized Controlled Trial - Psychotherapy Quality Rating Scale (RCT-PQRS) was used to evaluate study quality. Correlations between overall study quality and publication year were calculated. Results: Nine studies were included. Overall, study quality was rated as moderate. Six design elements were not addressed adequately in most studies. No significant correlation was found. Conclusions: The evidence base is of moderate quality. However, several specific design elements limit their conclusions. Strategies to minimize limitations are discussed.