Smoking
Conditions
Keywords
Electronic cigarette
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.
Interventions
DEVICEElectronic cigarette
Electronic cigarettes are devices that do not burn or use tobacco leaves but instead vaporize a solution the user then inhales. The device contains an electronic vaporization system, rechargeable batteries, electronic controls and cartridges of the liquid is vaporized.
Sponsors
The University of Hong Kong
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
No minimum to 25 Years
Healthy volunteers
No
Inclusion criteria
1. Ethnic Chinese 2. Cantonese speakers 3. Smoke at least 1 cigarette in the past 30 days
Exclusion criteria
1. Psychologically or physically unable to communicate 2. Undergoing other smoking cessation programme
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| 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
| Measure | Time frame | Description |
|---|---|---|
| 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 |
| 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 |
Countries
Hong Kong
Outcome results
None listed