NCT03264144

Address Tobacco Use Among Adolescents in Hong Kong

Changing Social Norms Around Smoking: A Cluster Randomized Controlled Trial to Address Tobacco Use Among Adolescents in Hong Kong

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 12,868 (estimated)
• Sponsor: The University of Hong Kong · Academic / Other
• Sex: All
• Age: 11 Years – 20 Years
• Healthy volunteers: Accepted

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.

Conditions

• Tobacco Use

Interventions

Type	Name	Description
BEHAVIORAL	Social 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.

Timeline

• Start date: 2017-10-13
• Primary completion: 2018-07-01
• Completion: 2018-07-01
• First posted: 2017-08-28
• Last updated: 2018-05-03

Locations

1 site across 1 country: Hong Kong