| Parameter | OR | 95% CI | p-value |
|---|---|---|---|
| ER | |||
| Positive | 0.736 | 0.520-1.042 | 0.0844 |
| Negative | 1 | ||
| p53 | |||
| Positive | 0.972 | 0.676-1.397 | 0.8787 |
| Negative | 1 | ||
| HER2 amplification | |||
| Positive | 0.528 | 0.366-0.762 | 0.0006 |
| Negative | 1 | ||
| Ki-67 level (%) | |||
| ≥ 15 | 1.487 | 1.011-2.188 | 0.0436 |
| < 15 | 1 | ||
| Breast volume | |||
| Category 1 | 1 | ||
| Category 2 vs. 1 | 1.345 | 0.824-2.197 | 0.2358 |
| Category 3 vs. 1 | 1.187 | 0.727-1.936 | 0.4932 |
| Category 4 vs. 1 | 0.984 | 0.603-1.605 | 0.9473 |
| Distance from nipple (cm) | 1.670 | 1.486-1.878 | < 0.0001 |
| Calcification | |||
| Present | 0.474 | 0.332-0.676 | < 0.0001 |
| Absent | 1 | ||
| DCIS component | |||
| Present | 0.505 | 0.263-0.969 | 0.0401 |
| Absent | 1 | ||
| Size difference between MRI and sonography (cm) | |||
| > 0.5 | 0.578 | 0.402-0.830 | 0.0030 |
| ≤ 0.5 | 1 | ||
| Multicentricity | |||
| Yes | 0.531 | 0.326-0.866 | 0.0112 |
| No | 1 | ||
| Initial tumor size (cm) | 0.666 | 0.604-0.735 | < 0.0001 |
| Histologic type | |||
| IDC | 1 | ||
| ILC | 0.664 | 0.185-2.382 | 0.5298 |
| No. of chemotherapy courses | |||
| < 6 | 1 | ||
| ≥ 6 | 1.160 | 0.769-1.748 | 0.4796 |
OR, odds ratio; CI, confidence interval; ER, estrogen receptor; DCIS, ductal carcinoma in situ; MRI, magnetic resonance imaging; IDC, invasive ductal carcinoma; ILC, invasive lobular carcinoma.