期刊
EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY
卷 25, 期 13, 页码 1437-1451出版社
OXFORD UNIV PRESS
DOI: 10.1177/2047487318780435
关键词
Tobacco; cigarettes; smoking; atrial fibrillation; systematic review; meta-analysis
资金
- Imperial College National Institute of Health Research (NIHR) Biomedical Research Centre (BRC), Imperial College School of Public Health
- South-East Regional Health Authorities of Norway
Background Epidemiological studies on smoking and atrial fibrillation have been inconsistent, with some studies showing a positive association while others have found no association. It is also unclear whether there is a dose-response relationship between the number of cigarettes smoked or pack-years and the risk of atrial fibrillation. We conducted a systematic review and meta-analysis to clarify the association. Design Systematic review and meta-analysis. Methods We searched the PubMed and Embase databases for studies of smoking and atrial fibrillation up to 20 July 2017. Prospective studies and nested case-control studies within cohort studies reporting adjusted relative risk estimates and 95% confidence intervals (CIs) of atrial fibrillation associated with smoking were included. Summary relative risks (95% CIs) were estimated using a random effects model. Results Twenty nine prospective studies (22 publications) were included. The summary relative risk was 1.32 (95% CI 1.12-1.56, I-2=84%, n=11 studies) for current smokers, 1.09 (95% CI 1.00-1.18, I-2=33%, n=9) for former smokers and 1.21 (95% CI 1.12-1.31, I-2=80%, n=14) for ever smokers compared to never smokers. Comparing current versus non-current smokers the summary relative risk was 1.33 (95% CI 1.14-1.56, I-2=78%, n=10). The summary relative risk was 1.14 (95% CI 1.10-1.20, I-2=0%, n=3) per 10 cigarettes per day and 1.16 (95% CI 1.09-1.25, I-2=49%, n=2) per 10 pack-years and there was no evidence of a non-linear association for cigarettes per day, Pnon-linearity=0.17. Conclusions The current meta-analysis suggests that smoking is associated with an increased risk of atrial fibrillation in a dose-dependent matter, but the association is weaker among former smokers compared to current smokers.
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