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Table 1 Basic characteristics of cases and controls

From: Haplotype analysis of common variants in the BRCA1 gene and risk of sporadic breast cancer

Characteristic Cases (n = 1322) Controls (n = 1908)
First-degree family history of breast cancer (%) 256 (19) 242 (13)
History of benign breast disease (%) 853 (65) 972 (51)
Post-menopausal status (%) 1133 (91) 1691 (93)
Ever used post-menopausal hormone (%) 902 (76) 1195 (68)
Age at diagnosis (selection in controls, SD) 62.9 (7.4) 63.4 (7.1)
Age at menopause (SD) 48.2 (5.8) 47.8 (6.2)