Breast Cancer Research : BCR, 8(4), R39
It has been suggested that hormonal risk factors act predominantly on estrogen receptor and progesterone receptor (ER/PR)-positive breast cancers. However, the data have been inconsistent, especially in younger women.
We evaluated the impact of age at menarche, pregnancy history, duration of breastfeeding, body mass index, combined oral contraceptive use, and alcohol consumption on breast cancer risk by ER/PR status in 1,725 population-based case patients and 440 control subjects aged 20 to 49 years identified within neighborhoods of case patients. We used multivariable unconditional logistic regression methods to conduct case-control comparisons overall as well as by
Ma, H., Bernstein, L., Ross, R. K., & Ursin, G. (2006). Hormone-related risk factors for breast cancer in women under age 50 years by estrogen and progesterone receptor status: results from a case-control and a case-case comparison. *Breast cancer research : BCR*, *8*(4), R39. https://doi.org/10.1186/bcr1514
Ma H, Bernstein L, Ross RK, Ursin G. Hormone-related risk factors for breast cancer in women under age 50 years by estrogen and progesterone receptor status: results from a case-control and a case-case comparison. Breast Cancer Res. 2006;8(4):R39. doi:10.1186/bcr1514
Ma, H., et al. "Hormone-related risk factors for breast cancer in women under age 50 years by estrogen and progesterone receptor status: results from a case-control and a case-case comparison." *Breast cancer research : BCR*, vol. 8, no. 4, 2006, pp. R39.
Estrogens, Receptors, Estrogen, Receptors, Progesterone, Progesterone