Table 3. Surgical characteristics of the population according to type of surgery.
| Characteristics | Breast-conserving surgery (%) N = 488 | Total mastectomy (%) N = 1,027 | P-value |
|---|---|---|---|
| Margins status | <0.001 | ||
| Negative | 317 (64.9) | 944 (91.9) | |
| Positive | 137 (28.1) | 36 (3.5) | |
| Missing | 34 (7.0) | 47 (4.6) | |
| Re-excision | <0.001 | ||
| No | 300 (61.5) | 946 (92.1) | |
| Yes | 168 (34.4) | 34 (3.3) | |
| Missing | 20 (4.1) | 47 (4.6) | |
| Vascular permeation | 0.004 | ||
| Negative | 182 (37.3) | 438 (42.6) | |
| Positive | 129 (26.4) | 457 (44.5) | |
| Missing | 177 (36.3) | 132 (12.9) | |
| Perineural invasion | 0.002 | ||
| No | 220 (45.1) | 641 (62.4) | |
| Yes | 47 (9.6) | 238 (23.2) | |
| Missing | 221 (45.3) | 148 (14.4) |