Population Characteristics
| Overall (n = 200) | |
|---|---|
| Age | |
| Mean (SD) | 42.8 (4.38) |
| Median [Min, Max] | 43.0 [35.0, 50.0] |
| Race | |
| Non-white | 13 (6.5%) |
| White | 180 (90.0%) |
| Missing | 7 (3.5%) |
| BMI | |
| Mean (SD) | 31.4 (9.48) |
| Median [Min, Max] | 28.8 [18.2, 82.5] |
| Age of 1st menses | |
| Mean (SD) | 12.6 (1.41) |
| Median [Min, Max] | 12.0 [9.0, 18.0] |
| Have child(ren) | |
| No | 50 (25.0%) |
| Yes | 150 (75.0%) |
| Age of 1st birth | |
| 29 or younger | 94 (47.0%) |
| 30 or older | 56 (28.0%) |
| Has not given birth | 50 (25.0%) |
| Had mammogram | |
| No | 60 (30.0%) |
| Yes | 140 (70.0%) |
| Breast Density | |
| A or B | 56 (28.0%) |
| C or D | 83 (41.5%) |
| Missing | 61 (30.5%) |
| Gone through menopause | |
| No | 189 (94.5%) |
| Yes | 11 (5.5%) |
| Age at menopause | |
| Mean (SD) | 40.0 (10.0) |
| Median [Min, Max] | 46.0 [26.0, 50.0] |
| Missing | 189 (94.5%) |
| Number of 1st degree relatives with breast cancer | |
| 0 | 150 (80%) |
| 1 | 50 (20%) |
| Number of 2nd degree relatives with breast cancer | |
| 0 | 30 (15%) |
| 1 | 135 (67.5%) |
| 2 | 23 (11.5%) |
| 3 | 11 (5.5%) |
| 4 | 1 (0.5%) |
Abbreviation: SD, standard deviation.