Age at first live birth and pesticide exposure as risk factors of breast cancer
- Author:
Duy Van Khuong
- Publication Type:Journal Article
- Keywords:
breast cancer
- MeSH:
Breast Neoplasms;
Risk factors;
Pesticides;
Parturition;
Birth Order
- From:Journal of Practical Medicine
1999;367(7):5-8
- CountryViet Nam
- Language:Vietnamese
-
Abstract:
A hospital-based case-control study was carried out to identify the age at first live birth and history of exposure to pesticides as risk factors of breast cancer. 1,220 patients with breast cancer and 1,487 age-matched controls examined between 1993-1997 were included in this study. Analyses demonstrated that unmarried women had breast cancer rate of 7.7%. Among cancer women, the number of those who had not any live birth was 121 (9.9%). The rates of cancer among women who were under 20, 20-24, 24-29 and 30 years or more at first live birth were 11.2%, 35.8%, 25.1% and 17.9%, respectively. Women who had history of exposure to pesticides and were 30-34 years at first live birth had higher risk for breast cancer (odds ratio 2.327; p<0.05) than those who were without this history and those had similar history of exposure to organophosphorines, organochlorines, carbamate and so on. (OR: 2.337, 3.107, 6.378, respectively).
