Breast cancer risk and hormone receptor status in older women by parity, age of first birth, and breastfeeding: a case-control study.

Publication Type:

Journal Article


Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, Volume 17, Issue 7, p.1723-30 (2008)


2008, Adult, Age Factors, Breast Feeding, Breast Neoplasms, Center-Authored Paper, Epidemiology Core Facility, Female, Follow-Up Studies, Humans, Middle Aged, Morbidity, Parity, PREGNANCY, Prognosis, Public Health Sciences Division, Receptors, Estrogen, Receptors, Progesterone, Retrospective Studies, Risk Factors, Shared Resources, Time Factors, Tumor Markers, Biological, United States, Young Adult


Early age at first birth and multiparity reduce the risk of estrogen receptor-progesterone receptor (ERPR)-positive breast cancer, whereas breastfeeding reduces the risk of both ERPR-positive and ERPR-negative cancers.