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Multivariate analysis of overall survival
| Variable | Hazard Ratio (95% CI) | P-value |
|---|---|---|
| Number of brain metastases | ||
| 1 vs 2–5 | 0.91 (0.19–4.40) | 0.90 |
| 1 vs >5 | 1.36 (0.26–7.08) | 0.71 |
| Systemic disease in the lungs | ||
| No vs Yes | 1.17 (0.47–2.92) | 0.73 |
| Systemic disease in the bone | ||
| No vs Yes | 3.01 (1.13–8.02) | 0.03 |
| Radiation dose (BED, continuous) | 0.93 (0.88–0.98) | 0.005 |
| Steroids during radiation | ||
| No vs Yes | 1.49 (0.57–3.93) | 0.42 |
