Table 3.
Odds of TNBC compared to non-TNBC according to family history of breast and/or ovarian cancer ( n = 914)
| Family history | Non-TNBC | TNBC | TNBC vs. non-TNBC | TNBC vs. non-TNBC |
|---|---|---|---|---|
| n (%) | n (%) | OR (95% CI)* | OR (95% CI)** | |
| Breast cancer in first-degree relatives | ||||
| No | 663 (86.6) | 116 (78.4) | 1.00 | 1.00 |
| Yes | 102 (13.5) | 32 (21.6) | 1.78 (1.14–2.77) | 1.98 (1.26–3.11) |
| Breast cancer in first- or second-degree relatives | ||||
| No | 586 (76.5) | 92 (62.2) | 1.00 | 1.00 |
| Yes | 180 (23.5) | 56 (37.8) | 1.98 (1.37–2.87) | 2.04 (1.40–2.98) |
| Breast or ovarian cancer in first-degree relatives | ||||
| No | 647 (84.5) | 112 (75.7) | 1.00 | 1.00 |
| Yes | 119 (15.5) | 36 (24.3) | 1.75 (1.13–2.67) | 1.93 (1.25–2.97) |
*Crude odds ratio.
**Adjusted for age at diagnosis and country of residence (U.S. or Mexico).