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) |