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Multivariable cox regression for overall survival.
| Variable | HR (95% CI) | P value |
|---|---|---|
| D90 (per 10 Gy) | 0.690 (0.548–0.871) | 0.003 |
| Tumor size (cm) | 1.286 (1.029–1.609) | 0.027 |
| KPS | 0.958 (0.927–0.990) | 0.011 |
| Age (years) | 0.987 (0.957–1.018) | 0.403 |
HR, hazard ratio; CI, confidence interval.
