Table 3.

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.