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Exposure to Radon and Kidney Cancer: A Systematic Review and Meta-analysis of Observational Epidemiological Studies
Bin Chen1, Tan Wei Yuan2, Ai Qing Wang3
1School of Public Health, Medical College of Soochow University, Suzhou 215123, Jiangsu, China; Suzhou Gusu District Center For Disease Prevention and Control, Suzhou 215123, Jiangsu, China.
Objective:
To evaluate the possible association between radon exposure and kidney cancer.
Methods:
We performed a systematic review and a meta-analysis based on random effect models to provide a pooled association measure.
Results:
We subjected 8 studies (overall relative risks and 95% confidence intervals: 1.01, 0.72 to 1.43, I2 = 64.4%) to meta-analysis. Subgroup analysis revealed a marginally significant association between radon exposure and kidney cancer in studies conducted in Europe. Two population-based studies provided no evidence for the increased risk of kidney cancer in the general population.
Conclusion:
The association between radon and kidney cancer remains unclear but cannot be excluded because of its biological plausibility and the limited number and quality of existing studies. Additional data from the general population and well-designed miner cohort studies are needed to reveal the real relationship between radon exposure and kidney cancer.
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