An interventional study of Telephone-Based Acceptance and Commitment Therapy (ACT) and Waitlist control with Telephone-Based Social Support in Hazardous Drinking and Harmful Alcohol Use, sponsored by The Hong Kong Polytechnic University. Not yet recruiting. Open to participants aged 18 Years to 35 Years. Per ClinicalTrials.gov, last updated 2026-08-17.
Sponsored by The Hong Kong Polytechnic University · Not applicable, Interventional, and Treatment
The goal of this clinical trial is to learn if telephone-based Acceptance and Commitment Therapy (ACT) works to help young adults with hazardous or harmful alcohol use quit drinking. It will also learn about the psychological effects of ACT on participants.
The main questions it aims to answer are:
Researchers will compare telephone-based ACT to a telephone-based social support programme to see if ACT works to help young adults quit drinking.
Participants will:
701 studies on the registry are indexed under Alcohol Drinking; 133 are open to participants now.
This study's planned enrollment of 288 is above the median of 122 across 607 interventional studies indexed under Alcohol Drinking.
Browse Alcohol Drinking studies →The Hong Kong Polytechnic University is the lead sponsor of 679 studies on the registry; 257 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Telephone-based Acceptance and Commitment Therapy for participants
Behavioral: Telephone-Based Acceptance and Commitment Therapy (ACT)
Waitlist control with Telephone-Based Social Support
Behavioral: Waitlist control with Telephone-Based Social Support
Participants in the intervention group will receive six weekly telephone sessions of ACT (45-60 min each) from interventionist.
Participants in the control group will receive six weekly telephone sessions of social support (45 min each) from interventionist.
Biochemically-Validated Abstinence
Participants who self-report quitting drinking in the past 30 days are tested for ethyl glucuronide (a by-product of alcohol metabolism) via urine strips to confirm abstinence biochemically.
Time frame: T4 (6 months after the end of the intervention)
Self-Reported 30-Day Abstinence
Reduction in alcohol consumption and self-reported 30-day abstinence will be recorded using TLFB. Participants will be asked to report the number of drinks they have consumed within the past 30 days.
Time frame: T0 (baseline), T1 (immediately after completion of the 6-week intervention), T2 (1 month after completing the intervention), T3 (3 months after completing the intervention), T4 (6 months after completing the intervention)
Reduction in Alcohol Consumption
Defined as 50% or more reduction in average alcohol consumption per day compared to baseline, measured using the Timeline Follow-Back (TLFB) questionnaire.
Time frame: T1 (immediately after completion of the 6-week intervention), T2 (1 month after the intervention), T3 (3 months after the intervention), T4 (6 months after the intervention)
Psychological Flexibility Index
Personalised Psychological Flexibility Index(PPFI) will be used to measure psychological flexibility by 19 items rating on a 7-point scale. Higher scores represent greater psychological flexibility. It has been validated among Chinese college students
Time frame: T0 (baseline), T1 (immediately after completion of the 6-week intervention), T2 (1 month after completing the intervention), T3 (3 months after completing the intervention), T4 (6 months after completing the intervention)
No study locations are listed for this record.
Start is estimated for Aug 2026; primary completion for Jul 2029, 35 months later.
Of 328 non-industry interventional studies with no phase under Alcohol Drinking, half reached primary completion within 24 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 45. This study's planned 35 months is above that.
Counting every sponsor, half of 336 studies reached it within 24 months; a quarter within 10 and three quarters within 45.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.
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The Hong Kong Polytechnic University →