Nurse-led Digital Cognitive Behavioral Therapy for Insomnia (dCBT-I) in University Students With Mild to Moderate Mental Health Problems

This study aims to evaluate the feasibility, acceptability, and potential effectiveness of a nurse-led digital cognitive behavioral therapy for insomnia (dCBT-I) via large language model based-chatbot among university students with mental health problems.

Inclusion Criteria: * Students aged ≥ 18 years from 22 local higher education institutions (University or Colleges) listed in Education Bureau. * Screening score indicating mild to moderate anxiety or depression, defined as a GAD-7 score of 5-14 and/or a PHQ-9 score of 5-14 at baseline. * Screened positive for insomnia symptoms using the Sleep Condition Indicator (SCI) and meeting DSM-5 diagnostic criteria for insomnia disorder. * Reporting a self-reported sleep efficiency of less than 85% over the past month. * Able to communicate in Chinese. Exclusion Criteria: * Participants who self-reported diagnosis of epilepsy, schizophrenia, or bipolar disorder * Participants who self-reported current suicidal ideation with intent or a suicide attempt within the past 2 months * Participants who self-reported current receipt of psychological or behavioral treatment for insomnia from a health professional * Participants who self-reported participation in an online or digital insomnia treatment programme at the time of enrolment.