Incidence Trends of Urinary Bladder and Kidney Cancers in Urban Shanghai, 1973-2005

Yang Yang, Li Xie, Jia-Li Zheng, Yu-Ting Tan, Wei Zhang and Yong-Bing Xiang

PLOS ONE, 2013, vol. 8, issue 12, 1-

Abstract: Objectives: We examined the incidence trends of bladder and kidney cancers using a population-based cancer registration data. Methods: Age-standardized incidence rates were analyzed using data from the Shanghai Cancer Registry during 1973 to 2005. Annual percentage changes and 95% confidence intervals were calculated to evaluate the incidence changes. Age-period-cohort analysis was further implemented to assess the contributions of age, period and cohort effects to the trends using the intrinsic estimator method. Results: In total, 12,676 bladder and 5,811 kidney cancer patients were registered in urban Shanghai. The age-standardized rates of bladder cancer in males increased from 6.39 to 7.66 per 100,000, or 0.62% per year, whereas the rates in females increased from 1.95 to 2.09 per 100,000, or 0.33% per year. For kidney cancer, the age-standardized rates in males increased from 1.20 to 5.64 per 100,000, or 6.98% per year. Similarly in females, the rates increased from 0.85 to 3.33 per 100,000, or 5.93% per year. Age-period-cohort analysis showed increasing curves of age and period effects but generally decreasing cohort effects for bladder and kidney cancers. Conclusions: Our results show increasing incidence trends of bladder and kidney cancers in Chinese men and women, especially for kidney cancer.

Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0082430

DOI: 10.1371/journal.pone.0082430

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