A case-control study of the relationship between induced abortion and female breast cancer in Henan Province

Abstract

Objective To investigate the relationship between induced abortion and female breast cancer in Henan Province.Methods A case-control study method was used for 89 patients with histopathologically proved breast cancer and 93 healthy females.All data were collected with unified questionnaire and analyzed with chi-square test and multi-factor unconditioned Logistic regression analysis.Results Multi-factor unconditioned Logistic regression analysis showed that female with a history of induced abortion had higher risk of breast cancer.After adjustment of marital status,education level,body mass index,age at menarche and number of full-term birth,the OR was 1.31 (95％ CI:0.93-1.89).Conclusions Induced abortion can increase the risk of breast cancer,and with the increase of induced abortion births,the OR value increased. Key words: Breast cancer; Induced abortion ; Case-control study