Table 1.
Characteristics of Women with Breast Cancer: the Breast Cancer Family Registry
| N (%) or Mean (SD) (n=6,235) |
|
|---|---|
| Age at enrollment, y, mean (SD) | 51.8 (10.6) |
| Race/ethnicity, N (%) | |
| Non-Hispanic Whites | 3,647 (58.5) |
| Hispanics | 1,033 (16.6) |
| Blacks | 751 (12.0) |
| Asians | 690 (11.1) |
| Other | 114 (1.8) |
| Education, N (%) | |
| High school or less | 2,299 (37.1) |
| Some college or bachelor’s degree | 2,957 (47.7) |
| Graduate degree | 945 (15.2) |
| Menopausal status at enrollment, N (%) | |
| Pre-menopausal | 3,056 (49.0) |
| Post-menopausal | 3,176 (51.0) |
| Body Mass Index (BMI) at enrollment, kg/m2, mean (SD) | 26.4 (5.9) |
| <18.5 | 143 (2.3) |
| 18.5–24.9 | 2,848 (45.7) |
| 25–29.9 | 1,723 (28.5) |
| ≥30 | 1,336 (22.1) |
| Recreational Physical Activity1, N (%) | |
| Active | 2,725 (45.5) |
| Inactive | 3,262 (54.5) |
| Cigarette Smoking, N (%) | |
| Never | 3,626 (58.3) |
| Ever | 2,589 (41.7) |
| Pack-years (among smokers), mean (SD) | 17.2 (18.0) |
| Usual Alcohol Consumption, N (%) | |
| Nondrinkers | 3,702 (60.7) |
| <7 drinks/week | 1,614 (26.5) |
| ≥7 drinks/week | 787 (12.9) |
| Cancer Treatment Received, N (%) | |
| Surgery | 5,378 (86.3) |
| Radiation therapy | 3,634 (58.3) |
| Chemotherapy | 3,271 (52.5) |
| Hormonal therapy | 2,862 (45.9) |
| Tumor Estrogen receptor (ER) Status | |
| Positive | 3,260 (52.3) |
| Negative | 1,394 (22.4) |
| Undetermined | 120 (1.9) |
| Missing/unknown | 1,461 (23.4) |
| Tumor Progesterone receptor (PR) Status | |
| Positive | 2,937 (47.1) |
| Negative | 1,679 (26.9) |
| Undetermined | 110 (1.8) |
| Missing/unknown | 1,509 (24.2) |
1
Physic al activity was defined as active if their current levels (during the three years prior to diagnosis or questionnaire completion) of moderate-to-vigorous recreational physical activities (MVPA) was ≥150 minutes/week, and inactive otherwise.