[Nested case-control study on the risk factors of XXXX ].

@entity5 @entity1586 @entity694 @entity14
OBJECTIVE: To investigate the risk factors of @entity14 . METHODS: A nested case-control study was conducted based on a cohort of 64,693 subjects in Jiashan county, Zhejiang, China. One hundred and ninety-six cases of @entity14 were detected during a follow-up program for 10 years. Nine hundred and eighty non- @entity14 subjects were randomly selected from the cohort as controls. Univariate analysis and mutivariate non-conditional logistic regression were used to analyse associations between the exposure factors and @entity14 . RESULTS: The age of case group was significantly older than that of the control group. Moreover, the age at diagnose of @entity694 was significantly older than that of the @entity5 . Other than age, the final regression model showed that mucous blood stool history and @entity1586 history were significantly associated with @entity694 (OR = 2.961, 95% CI:1.202-7.298 and 8.941, 95% CI:1.820-43.926, respectively) while mixed sources of drinking water was found to be associated with @entity5 with a OR value of 1.823 (95% CI:1.024-3.247). CONCLUSION: The risk factors of @entity694 were different from that of the @entity5 . Age was an important factor influencing the incidence of both @entity694 and @entity5 . Mucous blood stool history and @entity1586 history were associated with @entity694 , while drinking mixed water was closely associated with @entity5 .
