Table 2.
Multivariate prognostic analysis before propensity score matching.
| Variables | BCSS | OS | ||||
|---|---|---|---|---|---|---|
| HR | 95%CI | P | HR | 95%CI | P | |
| Age (years) | ||||||
| 70-74 | 1 | 1 | ||||
| 75-79 | 1.261 | 1.023-1.555 | 0.030 | 1.559 | 1.445-1.683 | <0.001 |
| 80-84 | 1.737 | 1.407-2.144 | <0.001 | 2.489 | 2.310-2.682 | <0.001 |
| ≥85 | 2.830 | 2.298-3.486 | <0.001 | 4.367 | 4.052-4.706 | <0.001 |
| Race | ||||||
| Non-Hispanic White | 1 | 1 | ||||
| Non-Hispanic Black | 1.035 | 0.777-1.378 | 0.814 | 1.066 | 0.963-1.179 | 0.217 |
| Hispanic (All Races) | 0.073 | 0.804-1.432 | 0.630 | 0.876 | 0.786-0.976 | 0.017 |
| Other | 0.769 | 0.544-1.086 | 0.136 | 0.707 | 0.626-0.798 | <0.001 |
| Histology | ||||||
| Invasive ductal carcinoma | 1 | 1 | ||||
| Invasive lobular carcinoma | 0.965 | 0.765-1.217 | 0.763 | 0.941 | 0.867-1.020 | 0.141 |
| Other | 0.896 | 0.681-1.179 | 0.433 | 1.045 | 0.961-1.137 | 0.303 |
| Grade | ||||||
| Well differentiated | 1 | 1 | ||||
| Moderately differentiated | 1.437 | 1.204-1.716 | <0.001 | 1.071 | 1.016-1.130 | 0.012 |
| Poorly/undifferentiated | 2.922 | 2.431-3.681 | <0.001 | 1.348 | 1.246-1.458 | <0.001 |
| Tumor stage | ||||||
| T1 | 1 | 1 | ||||
| T2 | 2.908 | 2.500-3.383 | <0.001 | 1.648 | 1.554-1.747 | <0.001 |
| PR status | ||||||
| Negative | 1 | 1 | ||||
| Positve | 0.647 | 0.540-0.776 | <0.001 | 0.916 | 0.852-0.985 | 0.018 |
| Chemotherapy | ||||||
| No | 1 | 1 | ||||
| Yes | 1.310 | 0.923-1.853 | 0.127 | 0.863 | 0.719-1.037 | 0.116 |
| RT | ||||||
| No | 1 | 1 | ||||
| Yes | 0.523 | 0.447-0.612 | <0.001 | 0.589 | 0.558-0.622 | <0.001 |
| Refused | 0.890 | 0.655-1.208 | 0.454 | 0.868 | 0.780-0.965 | 0.009 |