- Volume 13 Issue 6
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Passive Smoking and Cervical Cancer Risk: A Meta-analysis Based on 3,230 Cases and 2,982 Controls
- Zeng, Xian-Tao (Department of Epidemiology, School of Public Health, Wuhan University) ;
- Xiong, Ping-An (Department of Gynaecology and Obstetrics, Taihe Hospital, Hubei University of Medicine) ;
- Wang, Fen (Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Nanchang University) ;
- Li, Chun-Yi (Department of Gynaecology and Obstetrics, Taihe Hospital, Hubei University of Medicine) ;
- Yao, Juan (Department of Reproductive Medicine, Maternal and Child Health Hospital of Hubei Province) ;
- Guo, Yi (Department of Epidemiology, School of Public Health, Wuhan University)
- Published : 2012.06.30
Objective: Passive smoking has been considered as a risk factor of many cancers. To examine whether it might also pose a risk for cervical cancer, we performed a meta-analysis based on published case-control studies. Methods: We searched the PubMed database and references of included studies up to February 10th, 2012 for relevant studies. After two authors independently assessed the methodological quality and extracted data, a meta-analysis was conducted using CMA v2 software. Publication bias was evaluated by funnel plot, using Egger's and Begg's tests. Results: Finally 11 eligible studies yielded, involving 3,230 cases and 2,982 controls. The results showed that women who never smoke but exposed to smoking experience a 73% increase in risk of cervical cancer compared with non-exposed women (OR = 1.73, 95% CI = 1.35 - 2.21, p<0.001). Subgroup and sensitivity analyses indicated this result to be robust. Moderate publication bias was detected by visualing funnel plot, Egger's and Begg's tests. Conclusion: Based on currently available evidence, the findings of this meta-analysis suggests that passive smoking significantly and independently increases the risk of cervical cancer.
Passive smoking;cervical cancer;risk factor;meta-analysis
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