Longitudinal Ecological Study on Sleep-Wake Patterns in MDD Using Actigraphy

Exclusion Criteria

• •Presence of any psychiatric disorder(s) as assessed by MINI
• •Shift work, pregnancy, or work, family, or other commitments that interfere with regular sleep-wake patterns
• •Presence of other untreated sleep disorders based on cut-off scores of individual sections in SLEEP-50.
• •We will not exclude those with current suicidal risks (i.e., non-fleeting intent or plan), which is a common symptom of MDD. However, if serious suicidal risk (i.e., PHQ-9 Item 9 score \> 2) is identified, the participant will be referred to the PI (a clinical psychologist) for further assessment and professional mental health services if deemed necessary.
• •Severe medical or neurocognitive disorder(s) that make participation unsuitable based on the team's clinical experience
• •Presence of other psychiatric disorders as assessed by MINI
• •A history of electroconvulsive therapy (ECT)
• •Current involvement in any psychological treatment programme that targets depression and/or sleep and circadian problems
• •A change in the class or dose of any prescribed psychotropic drugs within 6 weeks before the baseline assessment
• •Shift work, pregnancy, or work, family, or other commitments that interfere with regular sleep-wake patterns
• •Presence of other untreated sleep disorders, including narcolepsy, obstructive sleep apnoea (OSA), and restless leg syndrome (RLS)/periodic leg movement disorder (PLMD) based on the cut-off scores of SLEEP-50 (narcolepsy ≥ 7; OSA ≥ 15; RLS/PLMD ≥ 7)