BI-RADSa a | BI-RADS b | BI-RADS c | BI-RADS d | ||
---|---|---|---|---|---|
Number of patients | 16 | 120 | 140 | 26 | |
Age | median (IQR) | 59 (54–68) | 59 (50–66) | 49 (41–60) | 44 (37–54) |
BMI | median (IQR) | 30 (27–35) | 27 (24–30) | 24 (22–27) | 23 (21–26) |
Number of pregnancies | 0 | 1 (6.3) | 9 (7.5) | 25 (17.9) | 3 (11.5) |
1 | 21 (17.5) | 22 (15.7) | 3 (11.5) | ||
2 | 6 (37.5) | 34 (28.3) | 51 (36.4) | 10 (38.5) | |
3+ | 9 (56.3) | 55 (45.8) | 41 (29.3) | 10 (38.5) | |
missing | 1 (0.8) | 1 (0.7) | |||
Age at first birth | median (IQR) | 24 (23–24) | 26 (23–29) | 29 (25–33) | 29 (28–33) |
Age at menarche | median (IQR) | 13 (13–15) | 13 (12–14) | 13 (12–14) | 12 (11–13) |
Menopausal status | premenopausal | 4 (25.0) | 31 (25.8) | 83 (59.3) | 18 (69.2) |
postmenopausal | 12 (75.0) | 89 (74.2) | 57 (40.7) | 8 (30.8) | |
Smoking | current | 3 (18.8) | 29 (24.2) | 16 (11.4) | 4 (15.4) |
former | 3 (18.8) | 16 (13.3) | 9 (6.4) | 2 (7.7) | |
never | 9 (56.3) | 64 (53.3) | 104 (74.3) | 19 (73.1) | |
missing | 1 (6.3) | 11 (9.2) | 11 (7.9) | 1 (3.8) | |
Hormone replacement therapy | current | 1 (6.3) | 4 (3.3) | 3 (2.1) | 1 (3.8) |
former | 3 (18.8) | 20 (16.7) | 14 (10.0) | ||
never | 12 (75.0) | 92 (76.7) | 123 (87.9) | 25 (96.2) | |
missing | 4 (3.3) | ||||
Oral contraceptives | current | 8 (6.7) | 23 (16.4) | 5 (19.2) | |
former | 3 (18.8) | 33 (27.5) | 37 (26.4) | 7 (26.9) | |
never | 8 (50.0) | 49 (40.8) | 57 (40.7) | 11 (42.3) | |
missing | 5 (31.3) | 30 (25.0) | 23 (16.4) | 3 (11.5) |