Meta-analysis of the risk factors of bladder cancer in Chinese population / 中华泌尿外科杂志

ABSTRACT

Objective To provide evidence for decision-making on bladder cancer prevention through investigating the main risk factors related to the incidence of bladder cancer in Chinese population.Methods Using the search terms "bladder neoplasm" and "smoking", the literature from January 1979 to June 2005 on the relationship between risk factors and bladder carcinoma was searched from MEDLINE database and PubMed database,and was studied by Meta-analysis.At the same time,ORs of randomized model and fixed model were calculated to evaluate the sensitivity.Results Totally,23 epidemiological studies on risk factors of bladder cancer were analyzed synthetically by Meta-analysis.The cumulative cases and controls were 7 600 and 5 002,respectively.The pooled odds ratio(OR) values and 95% CIs were as follows:smoking,1.38(1.22-1.57);contacting chemicals,1.95(1.74-2.19);drinking alcohol,2.53(1.60-4.00);drinking coffee,1.31(1.04-1.64);family history of bladder cancer,4.43(3.54-5.53);and gender,4.12(3.71-8.14);respectively(P