Electronic Cigarette Use and Quitting in Youth

Completed

• Conditions: Smoking
• Interventions: Device: Electronic cigarette

• Registration Number: NCT02949648
• Lead Sponsor: The University of Hong Kong

Brief Summary

A mixed method (longitudinal, trajectory and qualitative studies) to provide comprehensive evidence on the impact of e-cigarette use on smoking and quitting among smoking youth in Hong Kong.

Detailed Description

Subjects are from a cohort of Youth Quitline callers and smoking youth (N=200) in Hong Kong. The longitudinal study will investigate the effects of baseline e-cigarette use on quitting (including relapse), nicotine addiction and intention to smoke at 12-month telephone follow-up. A qualitative study will be conducted on 10 ex- and 10 current smokers to supplement and facilitate interpretation of the quantitative findings.

Basic Information
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Recruitment & Eligibility
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Study & Design
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Trial Locations

Study Timeline

• Study Start: 2015-09
• Study First Submitted: 2016-05-19
• Primary Completion: 2016-06
• Study Completion: 2016-08
• Status Verified: 2016-10
• Study First Submitted QC: 2016-10-27
• Last Update Submitted: 2016-10-27
• Study First Posted: 2016-10-31
• Last Update Posted: 2016-10-31

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 189

Inclusion Criteria

1. Ethnic Chinese
2. Cantonese speakers
3. Smoke at least 1 cigarette in the past 30 days

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Exclusion Criteria

1. Psychologically or physically unable to communicate
2. Undergoing other smoking cessation programme

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Electronic cigarette ever user	Electronic cigarette	Youth Quitline callers who reported ever use of e-cigarette at baseline.

Primary Outcome Measures

Name	Time	Method
7-day point prevalence abstinence assessed in the telephone follow-up survey	12 months after baseline survey	Self-reported 7-day point prevalence abstinence (PPA) is a validated, commonly used measure of smoking cessation. Subjects who reports no smoking in the preceding 7 days at the time of 12-month survey in the follow-up are regarded as quitters.; This measure has serval advantages compared to continuous abstinence. First, it can include smokers who take delayed action and quit. It also allows relapses to occur in the follow up period, without classifying smokers as permanent failure. Third, it does not rely on recall of past events happened long ago.

Secondary Outcome Measures

Name	Time	Method
Intention to quit assessed in the telephone follow-up survey	12 months after baseline survey	Smokers report whether they intend to quit smoking at the time of 12-month survey in the follow-up
Quit attempts assessed in the telephone follow-up survey	12 months after baseline survey	Smokers report how many times they try to abstain from cigarette for more than 24 hours in the whole follow-up period

Trial Locations

Locations (1)

Youth Quitline, School of Nursing, The University of Hong Kong; 🇭🇰 Hong Kong, Hong Kong