Table 4 Characteristics of the study cohort: Lifestyle and health behaviours
Variable | n = 89434(%) |
|---|---|
Lifestyle and health behaviours | |
Practice BSE | |
Yes | 44802 (50.10) |
No | 44632 (49.90) |
Ever used oral contraceptives | |
Yes | 53694 (60.04) |
No | 35740 (39.96) |
Length of oral contraceptive used (months) (mean±SD) | 32.70(±46.98) |
Ever used estrogen, w/wo progesterone | |
Yes | 24489 (27.38) |
No | 64945 (72.62) |
Length of estrogens/progesterone used (months) (mean±SD) | 13.11(±35.67) |
Ever smoked | |
Yes | 45091 (50.42) |
No | 44343 (49.58) |
Cigarettes per day | |
0 per day | 44343 (49.58) |
Occasionally | 1907 (2.13) |
1-5 per day | 6981 (7.81) |
6-10 per day | 9023 (10.09) |
11-25 per day | 21963 (24.56) |
26-50 per day | 4939 (5.52) |
>50 per day | 278 (0.31) |
Ever had a mammogram | |
Yes | 24429 (27.32) |
No | 65005 (72.68) |
Number of mammograms | |
0 | 65088 (72.78) |
1 | 16324 (18.25) |
2-3 | 6610 (7.39) |
>4 | 1412 (1.58) |