Table 1.
Description of demographic characteristics
| Characteristic | Overall (N = 139) | Control (N = 46) | Low dose (N = 45) | High dose (N = 48) |
|---|---|---|---|---|
| Age, y | 34.3 ± 6.9 | 34.6 ± 7.5 | 35.2 ± 6.4 | 33.4 ± 6.8 |
| Race | ||||
| White | 118 (85%) | 39 (85%) | 40 (89%) | 39 (81%) |
| Other | 21 (15%) | 7 (15%) | 5 (11%) | 9 (19%) |
| Education | ||||
| ≤High school | 4 (3%) | 3 (7%) | 1 (2%) | 0 (0%) |
| Some college | 40 (29%) | 12 (26%) | 13 (29%) | 15 (31%) |
| ≥College | 95 (68%) | 31 (67%) | 31 (69%) | 33 (69%) |
| Employed full time (% yes) | 80 (58%) | 24 (52%) | 28 (62%) | 28 (58%) |
| Marital status | ||||
| Single/divorced/separated | 55 (40%) | 23 (50%) | 11 (24%) | 21 (44%) |
| Married/partnered | 84 (60%) | 23 (50%) | 34 (76%) | 27 (56%) |
| Children (% yes) | 83 (60%) | 24 (52%) | 34 (76%) | 52 (52%) |
| BRCA gene mutation status | ||||
| Positive | 49 (35%) | 14 (30%) | 18 (40%) | 17 (35%) |
| Negative | 12 (9%) | 7 (15%) | 2 (4%) | 3 (6%) |
| Not tested | 78 (56%) | 25 (55%) | 25 (56%) | 28 (59%) |
| Predicted breast cancer risk (%) | ||||
| Claus modela | 24.5 ± 10.3 | 24.1 ± 10.1 | 24.3 ± 10.0 | 25.1 ± 11.0 |
| Gail modelb | 22.6 ± 8.6 | 25.0 ± 10.2 | 21.4 ± 8.1 | 20.7 ± 5.9 |
NOTE: Values are mean ± SD or N (%).
a
N = 135, Claus score is not calculated for women who did not have a female first/second-degree relative with breast cancer.
b
N = 69, Gail score is not calculated for women ≤ 35 years.