Address Tobacco Use Among Adolescents in Hong Kong

Not Applicable

• Conditions: Tobacco Use
• Interventions: Behavioral: Social norms campaign

• Registration Number: NCT03264144
• Lead Sponsor: The University of Hong Kong

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.

Basic Information
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Recruitment & Eligibility
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Study & Design
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Trial Locations

Study Timeline

• Study First Submitted: 2017-08-24
• Study First Submitted QC: 2017-08-24
• Study First Posted: 2017-08-28
• Study Start: 2017-10-13
• Status Verified: 2018-05
• Last Update Submitted: 2018-05-01
• Last Update Posted: 2018-05-03
• Primary Completion: 2018-07
• Study Completion: 2018-07

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 12868

Inclusion Criteria

• Local secondary schools that cover grades 1-6

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Exclusion Criteria

• International secondary schools
• Special schools for adolescents with visual, hearing or other physical impairments or disabilities

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Intervention	Social norms campaign	Students in the schools assigned to the intervention group will receive the intervention after the baseline survey. The intervention will be a social norms campaign involving posters, table tents, flyers and an online banner.

Primary Outcome Measures

Name	Time	Method
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 Outcome Measures

Name	Time	Method
Intention to quit	At the time of survey	Intention to quit
Quit attempts	Past 3 months	Number of quit attempts
Smoking intensity	Past 30 days	Number of smoking days in the past 30 days, average daily cigarette consumption

Trial Locations

Locations (1)

Local secondary schools; 🇭🇰 Hong Kong, Hong Kong