A hospital-based case-control study of breast-cancer risk factors by estrogen and progesterone receptor status
Yoo K, Tajima K, Miura S, Yoshida M, Murai H, Kuroishi T, Lee Y, Risch H, Dubrow R. A hospital-based case-control study of breast-cancer risk factors by estrogen and progesterone receptor status. Cancer Causes & Control 1993, 4: 39-44. PMID: 8431529, DOI: 10.1007/bf00051712.Peer-Reviewed Original ResearchConceptsHospital-based case-control studyBreast cancer risk factorsProgesterone receptor statusCase-control studyEstrogen receptorRisk factorsBreast cancerPR statusReceptor statusPR-negative breast cancerER-negative breast cancerFull-term pregnancyPR-negative casesBreast cancer casesCancer-free controlsSignificant differencesER statusMenstrual regularityEtiologic distinctionsBorderline differenceNegative casesCancerStatusAgePercent