An Internet-based Dialectical Behaviour Therapy-informed Skills Training for Promoting Smoking Cessation and Improving Psychological Distress of Adult Smokers.

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• Smoking 268

Keywords

• Dialectical behaviour therapy
• Skills training
• Internet-based intervention
• Psychological distress
• Adult smokers
• Smoking

Smoking

268 studies on the registry are indexed under Smoking; 136 are open to participants now.

This study's planned enrollment of 60 is below the median of 120 across 211 interventional studies indexed under Smoking.

Lead sponsor

Chinese University of Hong Kong is the lead sponsor of 1,419 studies on the registry; 487 are open to participants now.

Study arms

• Experimental
  DBT-ST group

  Participants in the intervention group will receive the DBT-ST by means of a free video-communication app. Over the next 14 weeks from the baseline, participants will receive two individual sessions (30-45 mins) and 12 group therapy sessions (120-minute)

  Behavioral: Internet-based dialectical behaviour therapy-informed skills training

• Other
  TAU

  Participants in the control group will receive a smoking cessation booklet published by the Hong Kong Council on Smoking and Health that provided information on the negative health consequences of smoking, reasons to quit, strategies for quitting, smoking cessation services available in Hong Kong, and a public Quitline number (usual care). Participants will also receive a monthly health education for three months that provides general health information and sharing sessions, which is one of the routine care for smokers during the first 3-4 months after they seek help for smoking problem (waiting period for further intervention).

  Behavioral: Monthly health education

Interventions

• BehavioralInternet-based dialectical behaviour therapy-informed skills training

  Adaptive applications of DBT-ST for smokers with psychological distress

• BehavioralMonthly health education

  General health information and sharing sessions

Primary outcomes

1. Biochemically validated 7-day PPA (an exhaled CO test and a salivary cotinine test)

   Participants who self-reported not smoking within the past seven days will be invited to attend a biochemical verification test of smoking abstinence

   Time frame: Baseline, 3-month post-intervention

2. Level of psychological distress

   Symptoms of depression, anxiety and stress measured by the Chinese version of Depression, Anxiety, and Stress Scale-21

   Time frame: Baseline, 3-month post-intervention

Secondary outcomes

1. Self-reported 7-day PPA

   Self-reporting of complete abstinence for at least seven days prior to assessment

   Time frame: Baseline, 3-month post-intervention

2. Self-reported smoking reduction of at least 50%

   Participants will report the number of cigarette they consume and the number will be compared to the number at baseline

   Time frame: 3-month post-intervention

3. Quit attempts

   The number of times that the participant engage in a period of intentional abstinence of more than 24 hours in the previous three months

   Time frame: Baseline, 3-month post-intervention

4. Emotion dysregulation

   Levels of emotion dysregulation measured by the Chinese version of the Difficulties in Emotion Regulation Scale (DERS)

   Time frame: Baseline, 3-month post-intervention

5. Distress tolerance

   Perceived ability to tolerate emotional distress measured by the Chinese version of the Distress Tolerance Scale (DTS)

   Time frame: Baseline, 3-month post-intervention

Other outcomes

1. Acceptability

   Client Satisfaction measured by the 8-item Client Satisfaction Questionnaire-8

   Time frame: 3-month post-intervention

2. Feasibility of the intervention

   Recruitment rate

   Time frame: 3-month post-intervention

3. Feasibility of the intervention

   Intervention engagement in terms of time spent on each session and participation rates

   Time frame: 3-month post-intervention

4. Feasibility of the intervention

   Attrition rates

   Time frame: 3-month post-intervention

5. Semi-structured interview

   Individual semi-structured interviews will be conducted at post-intervention to explore participants' experiences/perceptions of the internet-based DBT-ST, as well as their comments on the appropriateness/comprehensiveness of the content/frequency of the intervention.

   Time frame: 3-month post-intervention