title: Relation of time since last birth and parity to survival of young women with breast cancer.
abstract: We investigated whether survival was related to recent childbirth or parity in a cohort of 540 women diagnosed with breast cancer before the age of 45 years who were followed for up to 14 years. Women who had given birth within 2 years before their diagnosis of breast cancer were at increased risk of dying, compared with nulliparous women, with an adjusted relative risk of 3.1 (95% confidence interval = 1.8-5.4). There was a moderate association of parity with mortality, with an adjusted relative risk of 1.8 (95% confidence interval = 1.2-2.9) for women with three or more births, compared with nulliparous women.
authors.affiliation: Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA.
authors.forename: S H
authors.initials: SH
authors.lastname: Olson
authors.forename: A G
authors.initials: AG
authors.lastname: Zauber
authors.forename: J
authors.initials: J
authors.lastname: Tang
authors.forename: S
authors.initials: S
authors.lastname: Harlap
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000401:mortality*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D010298:Parity; D011247:Pregnancy; D011379:Prognosis; D012307:Risk Factors; D016019:Survival Analysis; D013997:Time Factors