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| Risk factors | Categories | Hazard ratio | 95% CI | P |
|---|---|---|---|---|
| Serum sodium | Low/normal | 1.86 | 1.12–3.11 | 0.017 |
| Number of sites | 3+/1.2 | 1.72 | 1.11–2.67 | 0.015 |
| Neutrophils | >7/<7 | 1.66 | 1.03–2.65 | 0.036 |
| LDH | >1.5/<1.5ULN | 2.12 | 1.33–3.40 | 0.002 |
| Bone metastases | +/− | 1.60 | 1.00–2.56 | 0.050 |
