Tobacco Use
Conditions
Keywords
Social norms, Adolescent, Smoking, Randomised controlled trial
Brief summary
This study will examine the effectiveness of a social norms campaign in correcting smoking misperceptions, reducing smoking susceptibility and changing smoking-related behaviours in Hong Kong adolescents.
Detailed description
The study involves a behavioural intervention with social norms approaches to correct smoking misperceptions, reduce smoking susceptibility and change smoking-related behaviours in Hong Kong adolescents. A 2-arm stratified clustered randomised controlled trial (RCT) will be conducted to evaluate the effectiveness of the intervention. A total of 18 secondary schools will be randomly selected from the 5 regions in Hong Kong and invited to the RCT. The schools will then be randomly allocated to intervention or control group in the ratio of 1:1. Secondary 1 to 5 (US Grade 7 to 11) students will be invited. Students in both intervention and control group will complete a baseline survey, and the intervention group will receive the intervention after the baseline. Intervention materials includes posters and table tents at school, flyers to students, and online banner on school website. The intervention adopts social norms approaches, and will highlight the prevalence of adolescents who do not smoke and have no intention to smoke. It will last for 2 months. Both intervention and control groups will complete follow-up surveys at 3 and 9 months. The control group will receive the intervention materials after the RCT.
Interventions
BEHAVIORALSocial norms campaign
Intervention messages will mainly highlight the prevalence of Hong Kong adolescents who do not smoke cigarettes and have no intention to smoke cigarettes. The messages will be conveyed to students through posters, table tents, flyers and an online banner. Posters will be posted at prominent places in schools, table tents will be placed in school canteens, flyers will be distributed to students, and the online banner will be placed at the school website. The intervention will last for 2 months.
Sponsors
The University of Hong Kong
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
11 Years to 20 Years
Healthy volunteers
Yes
Inclusion criteria
* Local secondary schools that cover grades 1-6
Exclusion criteria
* International secondary schools * Special schools for adolescents with visual, hearing or other physical impairments or disabilities
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Smoking susceptibility | At the time of survey | Intention to smoke in the next 12 months, if good friends are smoking in front, and if a good friend offered a cigarette |
| Perceived adolescent smoking prevalence | At the time of survey | Perceived prevalence of current smoking secondary school students in Hong Kong |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Smoking intensity | Past 30 days | Number of smoking days in the past 30 days, average daily cigarette consumption |
| Intention to quit | At the time of survey | Intention to quit |
| Quit attempts | Past 3 months | Number of quit attempts |
Countries
Hong Kong
Outcome results
None listed