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Does exposure to cigarette brands increase the likelihood of adolescent e-cigarette use? A cross-sectional study

Citation
Best C, van der Sluijs W, Haseen F, Eadie D, Stead M, MacKintosh AM, Pearce J, Tisch C, MacGregor A, Amos A, Miller M, Frank JW & Haw S (2016) Does exposure to cigarette brands increase the likelihood of adolescent e-cigarette use? A cross-sectional study, BMJ Open, 6 (2), Art. No.: e008734.

Abstract
OBJECTIVE: To examine the relationship between tobacco cigarette brand recognition, and e-cigarette use in adolescents. 

DESIGN: Cross-sectional observational study. 
SETTING: High schools in Scotland. 
PARTICIPANTS: Questionnaires were administered to pupils in Secondary 2 (S2 mean age: 14.0 years) and Secondary 4 (S4 mean age: 15.9 years) across 4 communities in Scotland. An 86\% response rate with a total sample of 1404 pupils was achieved. 
MAIN OUTCOME MEASURES: Self-reported previous use of e-cigarettes and self-reported intention to try e-cigarettes in the next 6 months. 
RESULTS: 75\% (1029/1377) of respondents had heard of e-cigarettes (69.5\% S2, 81.1\% S4), and of these, 17.3\% (10.6\% S2, 24.3\% S4 n=1020) had ever tried an e-cigarette. 6.8\% (3.7\% S2, 10.0\% S4 n=1019) reported that they intended to try an e-cigarette in the next 6 months. Recognition of more cigarette brands was associated with greater probability of previous e-cigarette use (OR 1.20, 99\% CI 1.05 to 1.38) as was having a best friend who smoked (OR 3.17, 99\% CI 1.42 to 7.09). Intention to try e-cigarettes was related to higher cigarette brand recognition (OR 1.41, 99\% CI 1.07 to 1.87), hanging around in the street or park more than once a week (OR 3.78, 99\% CI 1.93 to 7.39) and living in areas of high tobacco retail density (OR 1.20, 99\% CI 1.08 to 1.34). Never having smoked was a protective factor for both future intention to try, and past e-cigarette use (OR 0.07, 99\% CI 0.02 to 0.25; and OR 0.10, 99\% CI 0.07 to 0.16, respectively). 
CONCLUSIONS: Higher cigarette brand recognition was associated with increased probability of previous use and of intention to use e-cigarettes. The impact of tobacco control measures such as restricting point-of-sale displays on the uptake of e-cigarettes in young people should be evaluated.

Keywords
Health policy; Public health; Smoking and tobacco

StatusPublished
AuthorsBest Catherine, van der Sluijs Winfried, Haseen Farhana, Eadie Douglas, Stead Martine, MacKintosh Anne Marie, Pearce Jamie, Tisch Catherine, MacGregor Andy, Amos Amanda, Miller Martine, Frank John W, Haw Sally
Publication date02/2016
Publication date online23/02/2016
Date accepted by journal17/11/2015
PublisherBMJ Publishing
ISSN 2044-6055
LanguageEnglish

Journal
bmj Open: Volume 6, Issue 2 (2016)

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