Objective To evaluate the association of menstrual and reproductive factors with breast cancer in Jiangsu province. Methods A case-control study and univariate and multivariate logistic regression were employed to evaluate the association of menstrual and reproductive factors with breast cancer in 488 breast cancer cases and 482 controls. Results Univariate logistic regression revealed that subjects with elder menarcheal age and more number of live births had lower risk of breast cancer, Subjects with elder age at first live birth and lack of breast-fed and having the history of abortion had higher risk of breast cancer. The results of multivariate logistic regression were similar to that of univariate logistic regression. Conclusions Menstrual and reproductive factors among women in Jiangsu province were associated with breast cancer.
Chinese Journal of Disease Control and Prevention