Sleep-Wake Patterns on Illness Trajectories and Treatment Response in MDD

This intervention is a non-pharmacological approach that targets various factors contributing to sleep and circadian problems. It incorporates evidence-based elements such as CBT for insomnia, IPSRT, chronotherapy, and motivation enhancement. The treatment consists of 8 sessions with 4 cross-cutting modules: case formulation, sleep and circadian education, motivational interviewing, and goal setting. Participants also receive 4 core modules addressing sleep-wake regularity, daytime functioning, correcting beliefs, and maintaining behavioral change. Additionally, 6 optional modules cater to specific sleep-wake patterns, addressing sleep efficiency, excessive time in bed, delayed/advanced sleep phase, sleep-related worry, complex sleep environments, and nightmares. Modules are delivered based on individual needs. Sessions include agenda setting, homework review, treatment content delivery, goal assignment, and session summarization.