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Exploring Substance Use, Sleep Disturbances and Reward Sensitivity

An Exploratory Study of the Relationship Between Substance Use, Sleep Disturbances and Reward Sensitivity - A Randomized Control Trial of Cognitive Behavioral Therapy for Insomnia

Status
Not yet recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07028346
Enrollment
154
Registered
2025-06-19
Start date
2025-06-16
Completion date
2026-08-31
Last updated
2025-06-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Sleep Disturbances, Substance Abuse

Keywords

Substance abuse, substance misuse, sleep disturbances, sleep problem

Brief summary

According to foreign medical studies, substance use is closely related to reward sensitivity and sleep patterns. The purpose of this research is to understand the relationship between these three factors, which will help improve medical treatment and overall care for substance misuse in the future. Participants will be randomized into CBTi and sleep education groups, and their substance/ alcohol use, sleep parameters and reward sensitivity will be measured at multiple time points.

Detailed description

The study will invite approximately 154 individuals who have misused alcohol or drugs in the past three months and have symptoms of insomnia to participate. After completing the screening, participants who meet the study criteria will be asked to fill out five additional research questionnaires and take a 15-minute computer-based reward sensitivity test. Participants will then be randomly assigned, in a 1:1 ratio, to one of the following groups: 1. A three-session cognitive behavioral therapy (CBT) group (the first session lasts 60 minutes, with subsequent sessions not exceeding 30 minutes) and two follow-up phone calls (each lasting around 20 minutes). 2. A three-session sleep education group (the first session lasts 60 minutes, with subsequent sessions not exceeding 30 minutes) and two follow-up phone calls (each lasting around 20 minutes). All participants will be invited to complete additional research questionnaires and computer-based tests in the 4th and 8th weeks after the group sessions begin.

Interventions

BEHAVIORALCognitive Behavioral Therapy for Insomnia

Cognitive Behavioral Therapy for Insomnia (CBT-I) is a first-line, non-medication treatment for insomnia that helps individuals identify and change the thoughts and behaviors that contribute to their sleep problems.

BEHAVIORALSleep Education

Sleep Education group comprises psychoeducation sessions on sleep hygiene.

Sponsors

The University of Hong Kong
CollaboratorOTHER
Kwai Chung Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

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

Design outcomes

Primary

MeasureTime frame
Insomnia Severity IndexFrom enrollment to the end of treatment at 8 weeks
Pittsburgh Sleep Quality IndexFrom enrollment to the end of treatment at 8 weeks
Drug Use Disorders Identification TestFrom enrollment to the end of treatment at 8 weeks
Alcohol Use Disorders Identification TestFrom enrollment to the end of treatment at 8 weeks

Secondary

MeasureTime frameDescription
Sensitivity to Reward Scales from Sensitivity to Reward and Sensitivity to Punishment QuestionnaireFrom enrollment to the end of treatment at 8 weeksScores ranges from 0 to 48. Higher scores indicate greater sensitivity to reward, suggesting an increased behavioral tendency toward reward-seeking stimuli.
Computerized Iowa Gambling TaskFrom enrollment to the end of treatment at 8 weeks

Other

MeasureTime frameDescription
Client Satisfaction Questionnaire (CSQ-8)At the end of treatment at 8 weeksScores ranges from 8 to 32. Higher scores reflect greater overall satisfaction with services received, indicating a more positive client experience.

Contacts

Primary ContactMr. Lam
fritzyeung@ha.org.hk852-2959-8539

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026