Clinical Research Directory

Inclusion Criteria: 1. Individuals who receive treatment services at Substance Abuse Assessment Clinic and other psychiatric out-patient clinics of Kwai Chung Hospital; 2. Individuals who have problematic substance or alcohol use in the past 3 months, confirmed by scores higher than or equal to 1 in both part 1 and part 2 of Tobacco, Alcohol, Prescription medication, and other Substance use (TAPS); 3. Individuals who have sleep disturbances, confirmed by a score higher than or equal to 8 on the Insomnia Severity Index (ISI). Exclusion Criteria: 1. Individuals who cannot understand Cantonese, or cannot read Traditional Chinese 2. Individuals who cannot provide informed consent due to, for example, intoxication or abnormal mental state 3. Individuals who report abnormal or unstable mental states, such as active psychotic symptoms or acute intoxication, at any point of the study 4. Individuals who work overnight or have rotating shifts 5. Individuals who report pregnancy or medical conditions (including sleep apnea) that may have a severe impact on sleep 6. Individuals who use hypnotics regularly