Transdiagnostic CBT-I on Comorbid Depression and Insomnia

Exclusion Criteria

• •1. Received psychotherapy for depression and/or insomnia in the past 6 months;
• •2. A Patient Health Questionnaire-9 (PHQ-9) item 9 score \> 2, indicating a serious level of suicidal risk (referral information to professional mental health services will be provided);
• •3. Any medical or neurocognitive disorder(s) that makes participation unsuitable or interferes with adherence to the proposed interventions;
• •4. Other untreated sleep disorders, including narcolepsy, obstructive sleep apnoea (OSA), and restless leg syndrome (RLS) / periodic leg movement disorder (PLMD) based on the SLEEP-50;
• •5. A change in psychotropic drugs or over-the-counter medications that target depression and/or insomnia within 2 weeks before the baseline assessment;
• •6. Shift work, pregnancy, or other commitments that interfere with regular sleep-wake patterns; and
• •7. Hospitalisation