Little is known about risk factors for pregnancy-associated breast cancer (PABC), diagnosed during pregnancy or postpartum.We enrolled 1715 premenopausal women from the Nigerian Breast Cancer Study from 1998 to 2011. Based on recency of last pregnancy from diagnosis, breast cancer cases were categorized as (1) PABC diagnosed 2 years or longer postpartum, (2) PABC diagnosed 3 to 5 years postpartum, or (3) non-PABC diagnosed more than 5 years postpartum. Controls were matched to cases on recency of last pregnancy. Multiple logistic regressions were performed comparing cases and controls within each group.Of the 718 cases, 152 (21.2
作者:Ningqi, Hou;Temidayo, Ogundiran;Oladosu, Ojengbede;Imran, Morhason-Bello;Yonglan, Zheng;James, Fackenthal;Clement, Adebamowo;Imaria, Anetor;Stella, Akinleye;Olufunmilayo I, Olopade;Dezheng, Huo
来源:Annals of epidemiology 2013 年 23卷 9期