Tobacco smoking and the risk of gallbladder disease
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Published version
Author(s)
Aune, D
Vatten, LJ
Boffetta, P
Type
Journal Article
Abstract
Tobacco smoking has been inconsistently associated with gallbladder disease risk. To clarify the association we conducted a systematic review and meta-analysis of cohort studies published on the subject. We searched the PubMed and Embase databases for studies of smoking and gallbladder disease up to January 9th 2015. Prospective studies were included if they reported relative risk estimates and 95 % confidence intervals of gallbladder disease associated with current, former or ever smoking and by number of cigarettes per day. Summary relative risks were estimated by use of a random effects model. We identified ten prospective studies including 59,530 gallbladder disease cases among 4,213,482 participants that could be included in the meta-analysis. The summary RR was 1.19 (95 % CI 1.12–1.28, I2 = 46.9 %, n = 6) for current smokers, 1.10 (95 % CI 1.07–1.13, I2 = 0 %, n = 6) for former smokers and 1.15 (95 % CI 1.13–1.18, I2 = 0 %, n = 7) for ever smokers. In the dose–response analysis the summary relative risk was 1.11 (95 % CI 1.08–1.14, I2 = 33 %, n = 3) per 10 cigarettes per day and although there was indication of nonlinearity there was a dose-dependent positive association with increasing number of cigarettes smoked per day. The current meta-analysis provides evidence of an increased risk of gallbladder disease associated with tobacco smoking.
Date Issued
2016-02-22
Date Acceptance
2016-01-13
Citation
European Journal of Epidemiology, 2016, 31 (7), pp.643-653
ISSN
1573-7284
Publisher
Springer Verlag
Start Page
643
End Page
653
Journal / Book Title
European Journal of Epidemiology
Volume
31
Issue
7
Copyright Statement
© The Author(s) 2016. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
License URL
Identifier
PII: 10.1007/s10654-016-0124-z
Subjects
Cholecystectomy
Cholelithiasis
Cohort studies
Gallbladder disease
Gallstones
Meta-analysis
Tobacco smoking
Epidemiology
1117 Public Health And Health Services
Publication Status
Published