Table 2.
Univariate and multivariate Cox regression analysis
| Variable | Univariate Cox regression | Multivariate Cox regression | ||
|---|---|---|---|---|
| HR (95% CI) | P value | HR (95% CI) | P value | |
| Training cohort | ||||
| Age | 1.012 (0.989–1.035) | 0.310 | 1.011 (0.988–1.034) | 0.342 |
| Sex | 1.185 (0.785–1.790) | 0.419 | 0.820 (0.529–1.271) | 0.374 |
| Stage | 1.629 (1.347–1.969) | < 0.001 | 1.549 (1.269–1.892) | < 0.001 |
| Risk score | 6.338 (3.749–10.716) | < 0.001 | 5.952 (3.338–10.615) | < 0.001 |
| Test cohort | ||||
| Age | 1.003 (0.982–1.024) | 0.781 | 1.011 (0.990–1.032) | 0.299 |
| Sex | 1.039 (0.681–1.585) | 0.859 | 1.053 (0.689–1.609) | 0.811 |
| Stage | 1.639 (1.335–2.013) | < 0.001 | 1.576 (1.266–1.961) | < 0.001 |
| Risk score | 7.555 (3.530–16.170) | < 0.001 | 5.792 (2.707–12.396) | < 0.001 |
CI confidence interval, HR Hazard ratio