From: A clinical model for identifying the short-term risk of breast cancer
Study participant characteristics | Cases | Control subjects | p Valuea |
---|---|---|---|
Number of women | 433 | 1732 | – |
Age at breast cancer diagnosis, mean (SD) | 59.0 (9.4) | – | – |
Years from mammography to breast cancer, median | 1.74 | – | – |
Invasive breast cancer, % | 88 | – | – |
Screening detected breast cancer, % | 63 | – | – |
Age at mammography, mean (SD) | 57.4 (9.2) | 57.4 (9.2) | 0.99 |
BMI, mean (SD) | 25.6 (4.6) | 25.3 (4.0) | 0.19 |
Age at menarche, mean (SD) | 13.1 (1.4) | 13.2 (1.5) | 0.61 |
Parity, % | 89 | 88 | 0.56 |
Age at first birth, mean (SD) | 27.1 (5.4) | 26.6 (5.2) | 0.11 |
Current use of HRT, % | 6.9 | 4.4 | 0.05 |
Postmenopausal, % | 65 | 65 | 0.78 |
Breast cancer in family, % | 19 | 13 | 4.5 × 10−4 |