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| A case-control study of risk factors for bladder cancer in Taizhou |
| ZHU Wan-hong, LIU Li-zhen, CAI Xian-guo
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| Taizhou Hospital of Zhejiang Province,Linhai,Zhejiang 317000,China |
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Abstract Objective To analyze the influencing factors for bladder cancer in Taizhou,and to provide evidence for strengthening the prevention and treatment of bladder cancer in Taizhou.Methods A total of 500 cases of bladder cancer diagnosed in Taizhou Hospital from 2012 to 2017 were selected as a case group,and 504 patients without tumor or urinary system diseases during the same period were selected as a control group. A structured questionnaire was used to retrospectively investigate the demographic information,occupational exposure（whether they were exposed to aromatic amine,polycyclic aromatic hydrocarbons,tobacco,tobacco smoke or heavy metals at work）,healthy behaviors and diets of the two groups one year before admission. A Logistic regression model was used to analyze the influencing factors for bladder cancer.Results There was no significant differences in sex,age,ethnicity,education and marital status between the case group and the control group（P > 0.05）. Patients with occupational exposure history accounting for 31.60% in the case group and 24.60% in the control group,for overweight/obesity were 37.60% and 31.74%,for smoking were 55.80% and 46.23%,for high vegetable intake frequency were 43.80% and 52.58%,for high fruit intake frequency were 55.40% and 62.70%,for physical activity were 24.60% and 31.75%,respectively. The results of multivariate logistic regression analysis showed that occupational exposure（OR=1.861,95%CI：1.229-2.836）,overweight/obesity（OR=1.374,95%CI：1.021-1.863）,current smoking（OR=1.664,95%CI：1.101-2.503）and previous smoking（OR=1.454,95%CI：1.016-2.066）were the risk factors for bladder cancer. High vegetable intake frequency（OR=0.731,95%CI：0.566-0.947）,high fruit intake frequency（OR=0.659,95%CI：0.463-0.927）and vigorous physical activity（OR=0.566,95%CI：0.403-0.798）were the protective factors for bladder cancer.Conclusion Occupational exposure,overweight/obesity,current smoking,previous smoking were the risk factors for bladder cancer. High vegetables intake frequency,high fruit intake frequency and vigorous physical activity were the protective factors for bladder cancer.
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Received: 19 July 2018
Revised: 11 January 2019
Published: 04 March 2019
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