Table 1.
Subject characteristics and risk factors
| Characteristic | Those who underwent surgical excision (n = 63) | Those who did not undergo surgical excision (n = 25) | P value |
|---|---|---|---|
| Age—n (%) | 0.77 | ||
| <39 | 3 (5) | 1 (4) | |
| 40–49 | 19 (30) | 7 (28) | |
| 50–59 | 17 (27) | 8 (32) | |
| 60–69 | 16 (25) | 8 (32) | |
| >70 | 8 (13) | 1 (4) | |
| Unknown | 0 (0) | 0 (0) | |
| Age—mean (SD) | 56 (12) | 56 (10) | 0.84 |
| Family history—n (%) | 0.23 | ||
| No | 45 (71) | 17 (68) | |
| Yes | 5 (8) | 0 (0) | |
| Unknown | 13 (21) | 8 (32) | |
| Race/ethnicity—n (%) | 0.53 | ||
| White | 43 (68) | 22 (88) | |
| Hispanic | 0 (0) | 0 (0) | |
| American Indian/Alaska Native | 1 (2) | 0 (0) | |
| Asian | 1 (2) | 0 (0) | |
| African American | 2 (3) | 0 (0) | |
| Filipino | 1 (2) | 0 (0) | |
| Unknown | 15 (24) | 3 (12) | |
| BMI—mean (SD) | 27 (6) | 30 (8) | 0.19 |
| Tobacco—n (%) | 0.24 | ||
| Current | 4 (6) | 3 (12) | |
| Never | 37 (59) | 10 (40) | |
| History | 12 (19) | 4 (16) | |
| Unknown | 10 (16) | 8 (32) | |
| Active alcohol use—n (%) | 0.16 | ||
| No | 20 (31) | 4 (16) | |
| Yes | 27 (43) | 10 (40) | |
| Unknown | 16 (25) | 11 (44) | |
| Density, mammographic—n (%) | 0.29 | ||
| <25 % | 1 (2) | 1 (4) | |
| >25–50 % | 11 (17) | 9 (36) | |
| >50–75 % | 39 (62) | 12 (48) | |
| >75 % | 3 (5) | 0 (0) | |
| Unknown | 9 (14) | 3 (12) | |