Table 4.
Results of Cox’s multivariate analysis for breast cancer related and recurrence free survival
| Category (variable) | β (SE) | Relative risk (95% CI) | p Value |
| Breast cancer related survival | |||
| Stage | <0.001 | ||
| I | Reference | ||
| II | 0.80 (0.41) | 2.23 (1.00 to 5.01) | 0.051 |
| III | 2.03 (0.45) | 7.63 (3.18 to 18.30) | <0.001 |
| Cell proliferation | |||
| Low <20% | Reference | ||
| High ≥20% | 1.26 (0.38) | 3.53 (1.68 to 7.44) | <0.001 |
| Histological grade | 0.048 | ||
| I | Reference | ||
| II | 0.40 (0.47) | 1.49 (0.59 to 3.75) | 0.397 |
| III | −0.51 (0.55) | 0.60 (0.21 to 1.76) | 0.355 |
| Recurrence free survival | |||
| Stage | <0.001 | ||
| I | Reference | ||
| II | 0.53 (0.29) | 1.70 (0.97 to 2.99) | 0.066 |
| III | 1.34 (0.35) | 3.81 (1.90 to 7.63) | <0.001 |
| Cell proliferation | |||
| Low <20% | Reference | ||
| High ≥20% | 1.26 (0.26) | 3.54 (2.11 to 5.95) | <0.001 |
CI, confidence interval; SE, standard error.