Table 1.
Baseline Characteristics of the Patients Included
| Variables | Short Time Interval (N=557) | Long Time Interval (N=497) | P value |
|---|---|---|---|
| Age, year | 0.557 | ||
| ≤40 | 115 | 110 | |
| >40 | 442 | 387 | |
| Histologic type | 0.011 | ||
| Invasive ductal carcinoma | 523 | 483 | |
| Other types# | 34 | 14 | |
| Tumor size, cm | 0.443 | ||
| ≤2.0 | 248 | 233 | |
| >2.0 | 309 | 264 | |
| N stage | 0.792 | ||
| N1 | 325 | 286 | |
| N2-3 | 232 | 211 | |
| ER status | 0.688 | ||
| Positive | 513 | 461 | |
| Negative | 44 | 36 | |
| PR status | <0.001 | ||
| Positive | 538 | 441 | |
| Negative | 19 | 56 | |
| HER 2 status | 0.119 | ||
| Positive | 106 | 114 | |
| Negative | 451 | 383 | |
| Molecular type | 0.076 | ||
| Luminal A | 397 | 329 | |
| Luminal B | 160 | 168 | |
| LVI | 0.002 | ||
| Yes | 85 | 113 | |
| No | 472 | 384 | |
| Follow-up, months | 0.066 | ||
| Median | 75.3 | 73.2 |
Note: #Other types included: Invasive papillary carcinoma, invasive lobular carcinoma and mucinous adenocarcinoma.
Abbreviation: LVI, lymphovascular invasion.