A Cluster Randomised Controlled Trial on Tobacco Industry Denormalisation
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- The University of Hong Kong
- Enrollment
- 2,881
- Locations
- 1
- Primary Endpoint
- TID beliefs
Study Overview
Brief Summary
The brief intervention comprised the main intervention (tobacco industry denormalisation [TID] video, TID worksheet and sugar-sweetened beverages [SSB] worksheet) and booster intervention (worksheets where key contents in the main intervention reappeared).
The worksheets in the main intervention were printed in colour and contained eight pictures and eight texts which described the pictures. Students needed to match the pictures and texts. The booster worksheets contained the previous eight coloured pictures for the TID and SSB worksheet groups or six coloured screenshots from the TID video. Students needed to complete the six true or false questions based on the pictures provided.
Assessments were conducted immediately (T1), two weeks (T2), one month (T3) and three months (T4) after the main intervention.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Prevention
- Masking
- None
Eligibility Criteria
- Ages
- 8 Years to — (Child, Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Parents' consent to their children's participation;
- •Parents and children could understand Chinese.
Exclusion Criteria
- Not provided
Arms & Interventions
TID video
Intervention: TID video (Other)
TID worksheet
Intervention: TID worksheet (Other)
SSB worksheet
Intervention: SSB worksheet (Other)
Outcomes
Primary Outcomes
TID beliefs
Time Frame: Immediately after the main intervention
1. Tobacco industry's philanthropy is to care about community well-being. 2. Tobacco industry does everything possible to make children smoke. 3. Tobacco industry deceives the public for commercial gain. 4. Tobacco industry uses many tactics to resist tobacco control regulations. All the statements have 5 options from strongly disagree to strongly agree. The options were scored as 1-5 or 5-1, as appropriate, with higher scores indicating stronger TID beliefs.
Alternative smoking product (ASP)-related knowledge
Time Frame: Immediately after the main intervention
Electronic cigarettes (ECs) and heated tobacco products (HTPs) are less harmful than cigarettes. The statement has 5 options from strongly disagree to strongly agree. The options were scored as 5-1, with higher scores indicating better knowledge.
Risk perceptions of ASPs
Time Frame: Immediately after the main intervention
1. Do you think trying a few puffs of ECs will harm your health? 2. Do you think trying a few puffs of HTPs will harm your health? Both statements have 11 options from not harmful at all to very harmful. The options were scored as 0-10, with higher scores indicating stronger anti-tobacco attitudes.
Acceptability of ASPs
Time Frame: Immediately after the main intervention
1. Do you think it is acceptable for primary school students to try a few puffs of ECs? 2. Do you think it is acceptable for primary school students to try a few puffs of HTPs? Both statements have 11 options from very unacceptable to very acceptable. The options were scored as 0-10, with lower scores indicating stronger anti-tobacco attitudes.
General views on the tobacco industry
Time Frame: Immediately after the main intervention
What do you think of the tobacco industry? The statement has 11 options from very bad to very good. The options were scored as 0-10, with lower scores indicating stronger anti-tobacco attitudes.
Secondary Outcomes
- Susceptibility to use ASPs(Three months after the main intervention)
- TID beliefs(Three months after the main intervention)
- ASP-related knowledge(One month after the main intervention)
- Risk perceptions of ASPs(Three months after the main intervention)
- Acceptability of ASPs(Three months after the main intervention)
- General views on the tobacco industry(Three months after the main intervention)
- ASP-related Knowledge(Three months after the main intervention)
Investigators
Dr. Daniel Sai-Yin Ho
Principle investigator and associate professor
The University of Hong Kong