Table 4. Multivariate Logistic Regression Analysis of TN Subtype for Clinical and Radiologic Factors Compared to non-TN Subtypes After Adjusting for Histologic Grade.
| Variable | TN (n = 34) | |
|---|---|---|
| OR (95% CI) | P Value | |
| Age | 0.970 (0.931 - 1.011) | 0.149 |
| Symptoms | ||
| No | 1.0 | |
| Yes | 1.026 (0.422 - 2.496) | 0.954 |
| MMG finding | ||
| Negative | 1.0 | |
| Asymmetry/mass | 0.173 (0.025 - 1.192) | 0.075 |
| Mass with microcalcification | 0.246 (0.045 - 1.345) | 0.106 |
| US BI-RADS | ||
| 4a | 1.0 | |
| 4b | 1.520 (0.403 - 5.723) | 0.536 |
| > 4c | 1.007 (0.377 - 2.688) | 0.989 |
| Cancer type | ||
| IDC | 1.0 | |
| Mucinous | 0.267 (0.013 - 5.479) | 0.391 |
| Medullary | 7.092 (1.149 - 43.772) | 0.035 |
| Papillary | 5.061 (0.308 - 83.153) | 0.256 |
| T-stage | ||
| T1 | 1.0 | |
| T2 | 2.155 (0.345 - 13.444) | 0.411 |
| T3 | 23.652 (4.211 - 132.830) | 0.003 |
Abbreviations: BI-RADS, breast imaging reporting and data system; IDC, invasive ductal carcinoma; MMG, mammographic; TN, triple negative; US, ultrasound; OR, odds ratio; CI, confidence interval; IHC, immunohistochemical.