Univariate Cox regression analysis: variables that were significantly associated with survival within 12 months
| Variable | Level | HR (95% CI) | P value |
| WCC (K/µL) | In 1-unit increase | 1.052 (1.026 to 1.080) | <0.0001 |
| BUN (mg/dL) | In 1-unit increase | 1.020 (1.002 to 1.039) | 0.0284 |
| ALT (U/L) | In 1-unit increase | 1.004 (1.001 to 1.007) | 0.0035 |
| AST (U/L) | In 1-unit increase | 1.006 (1.002 to 1.010) | 0.0015 |
| Race/ethnicity | Black vs non-black | 2.320 (1.114 to 4.833) | 0.0246 |
| Cancer status | Active vs remission | 2.497 (1.062 to 5.868) | 0.0358 |
| Organism | S. aureus vs no S. aureus | 2.305 (1.107 to 4.802) | 0.0257 |
| Steroid usage | Yes vs No | 8.151 (3.059 to 21.719) | <0.0001 |
| WCC (K/µL) | <4 vs 4–11 | 3.845 (1.233 to 11.990) | 0.0203 |
| >11 vs 4–11 | 6.723 (2.783 to 16.241) | <0.0001 | |
| ALT (U/L) | ≥41 vs <41 | 4.032 (1.836 to 8.854) | 0.0005 |
| AST (U/L) | ≥40 vs <40 | 2.276 (1.071 to 4.836) | 0.0325 |
| Total bilirubin (mg/dL) | ≥1.2 vs <1.2 | 3.014 (1.285 to 7.070) | 0.0112 |
ALT, alanine aminotransferase; AST, aspartate aminotransferase; BUN, blood urea nitrogen; WCC, white cell count.