A Cluster RCT on TID

Not Applicable

Completed

• Conditions: Tobacco Industry; Denormalisation
• Interventions: Other: SSB worksheet; Other: TID video; Other: TID worksheet

• Registration Number: NCT05403957
• Lead Sponsor: The University of Hong Kong

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.

Detailed Description

Not available

Study Timeline

• Study Start: 2021-06-01
• Primary Completion: 2021-10-22
• Study Completion: 2022-02-19
• Status Verified: 2022-05
• Study First Submitted: 2022-05-30
• Study First Submitted QC: 2022-05-30
• Last Update Submitted: 2022-05-30
• Study First Posted: 2022-06-03
• Last Update Posted: 2022-06-03

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 2881

Inclusion Criteria

• Parents' consent to their children's participation;
• Parents and children could understand Chinese.

Exclusion Criteria

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
SSB worksheet	SSB worksheet	-
TID video	TID video	-
TID worksheet	TID worksheet	-

Primary Outcome Measures

Name	Time	Method
TID beliefs	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	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	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	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	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 Outcome Measures

Name	Time	Method
Susceptibility to use ASPs	Three months after the main intervention	1. If your good friend passes you an EC, will you use it?; 2. Do you think you will use EC within the next 12 months?; 3. If your good friend passes you an HTP, will you use it?; 4. Do you think you will use HTP within the next 12 months?; All the statements have 5 options from definitely yes to definitely not. Responses were dichotomised as a binary outcome, students who chose "definitely not" for both items were deemed not susceptible to a specific smoking product and otherwise susceptible.
Risk perceptions of ASPs	Three months 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.
TID beliefs	Three months after the main intervention	1. Tobacco industry uses many tactics to resist tobacco control regulations.; 2. Tobacco industry struggles to build a corporate image to improve tobacco products sales.; Both statements have 5 options from strongly disagree to strongly agree. The options were scored as 1-5, with higher scores indicating stronger TID beliefs.
ASP-related knowledge	One month after the main intervention	1. ECs and HTPs are less harmful than cigarettes.; 2. HTPs contain many carcinogens.; Both 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 better knowledge.
Acceptability of ASPs	Three months 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	Three months 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.
ASP-related Knowledge	Three months after the main intervention	1. HTPs contain many carcinogens.; 2. ECs are less harmful than cigarettes.; 3. Secondhand aerosols of ECs and HTPs are less harmful.; 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 better knowledge.

Trial Locations

Locations (1)

Local primary schools; 🇭🇰 Hong Kong, Hong Kong