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OpenTrials
Completed

NCT Number: NCT05403957

A Cluster RCT on TID

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.

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Key information

Conditions

Tobacco Industry Denormalisation

Age range

8 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Local primary schools

Hong Kong

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

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

Exclusion criteria

-

Treatment and study plan

TID video

Other

Main intervention: A video introducing the tobacco industry's marketing tactics to attract children and adolescents to smoke and their manipulation of tobacco control policy formation.

Booster intervention: 6 screenshots from the video and 6 true or false questions.

TID worksheet

Other

Main intervention: A worksheet using pictures and texts to introduce the tobacco industry's marketing tactics to attract children and adolescents to smoke and their manipulation of tobacco control policy formation.

Booster intervention: 8 pictures from the TID worksheet in the main intervention and 6 true or false questions.

SSB worksheet

Other

Main intervention: A worksheet using pictures and texts to introduce the beverage industry's marketing tactics to attract children and adolescents to drink SSBs and the health risks of SSBs.

Booster intervention: 8 pictures from the SSB worksheet in the main intervention and 6 true or false questions.

Primary outcomes

  1. TID beliefs

    Time frame: Immediately after the main intervention

    • Tobacco industry's philanthropy is to care about community well-being.
    • Tobacco industry does everything possible to make children smoke.
    • Tobacco industry deceives the public for commercial gain.
    • 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.

  2. 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.

  3. Risk perceptions of ASPs

    Time frame: Immediately after the main intervention

    • Do you think trying a few puffs of ECs will harm your health?
    • 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.

  4. Acceptability of ASPs

    Time frame: Immediately after the main intervention

    • Do you think it is acceptable for primary school students to try a few puffs of ECs?
    • 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.

  5. 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

  1. Susceptibility to use ASPs

    Time frame: Immediately after the main intervention

    • If your good friend passes you an EC, will you use it?
    • Do you think you will use EC within the next 12 months?
    • If your good friend passes you an HTP, will you use it?
    • 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.

  2. TID beliefs

    Time frame: One month after the main intervention

    • Tobacco industry conceals the harms of smoking products for commercial gain.
    • Tobacco industry deceives the public for commercial gain.
    • 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, with higher scores indicating stronger TID beliefs.

  3. ASP-related knowledge

    Time frame: One month after the main intervention

    • ECs and HTPs are less harmful than cigarettes.
    • 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.

  4. Risk perceptions of ASPs

    Time frame: One month after the main intervention

    • Do you think trying a few puffs of ECs will harm your health?
    • 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.

  5. Acceptability of ASPs

    Time frame: One month after the main intervention

    • Do you think it is acceptable for primary school students to try a few puffs of ECs?
    • 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.

  6. General views on the tobacco industry

    Time frame: One month 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.

  7. Susceptibility to use ASPs

    Time frame: One month after the main intervention

    • If your good friend passes you an EC, will you use it?
    • Do you think you will use EC within the next 12 months?
    • If your good friend passes you an HTP, will you use it?
    • 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.

  8. TID beliefs

    Time frame: Three months after the main intervention

    • Tobacco industry uses many tactics to resist tobacco control regulations.
    • 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.

  9. ASP-related Knowledge

    Time frame: Three months after the main intervention

    • HTPs contain many carcinogens.
    • ECs are less harmful than cigarettes.
    • 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.

  10. Risk perceptions of ASPs

    Time frame: Three months after the main intervention

    • Do you think trying a few puffs of ECs will harm your health?
    • 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.

  11. Acceptability of ASPs

    Time frame: Three months after the main intervention

    • Do you think it is acceptable for primary school students to try a few puffs of ECs?
    • 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.

  12. General views on the tobacco industry

    Time frame: 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.

  13. Susceptibility to use ASPs

    Time frame: Three months after the main intervention

    • If your good friend passes you an EC, will you use it?
    • Do you think you will use EC within the next 12 months?
    • If your good friend passes you an HTP, will you use it?
    • 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.

Sponsors and collaborators

Lead sponsor

The University of Hong Kong

Other

Registry information

Official study title

A Cluster Randomised Controlled Trial on Tobacco Industry Denormalisation

Important dates

Study start
2021
Primary completion
2021
Study completion
2022
First posted
Jun 3, 2022
Registry last updated
Jun 3, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.