Table 2.

Predictive value for 30-day survival of blood test data

Blood test data	AUC	Optimal cut-off value	Univariate analysis				Multivariate analysis
				Number of patients	30-day survival (%)	p	Odds ratio for 30-day mortality	95%CI	p
C-reactive protein	0.6752	5.4 mg/dL	≧5.4	385	29.4%	<0.0001	1.86	1.30 – 2.67	0.0007
			<5.4	376	55.5%		1
Albumin	0.6275	2.8 g/dL	≧2.8	294	56.0%	<0.0001	1		0.0006
			<2.8	467	33.7%		1.9	1.31 – 2.76
Total bilirubin	0.5909	1.3 mg/dL	≧1.3	151	23.8%	<0.0001	1.55	0.93 – 2.62	0.0953
			<1.3	610	46.8%		1
Aspartate aminotransferase (AST)	0.5783	47 IU/L	≧47	218	47.3%	<0.0001
			<47	243	31.2%
Alanine aminotransferase (ALT)	0.6141	19 IU/L	≧19	401	33.5%	<0.0001	1.44	0.99 – 2.29	0.0511
			<19	360	54.0%		1
Blood urea nitrogen (BUN)	0.6782	21 mg/dL	≧21	354	27.8%	<0.0001	1.98	1.33 – 2.95	0.0007
			<21	407	54.8%		1
Creatinine	0.5481	1.09 mg/dL	≧1.09	168	25.8%	<0.0001	1.80	0.86 – 3.79	0.1172
			<1.09	593	46.9%		1
Estimated glomerular filtration rate (eGFR)	0.5577	45 ml/min/ 1.73 m2	≧45	596	46.6%	<0.0001	1		0.5568
			<45	165	27.3%		1.25	0.60 – 2.64
White blood cell count	0.6589	8.600 × 103/μL	≧8.600	417	30.2%	<0.0001	1.47	1.00 – 2.15	0.0495
			<8.600	344	57.0%		1
Basophil	0.5940	0.1 %	≧0.1	605	46.6%	<0.0001	1		0.4266
			<0.1	156	25.4%		1.22	0.75 – 2.00
Eosinophil	0.6524	0.8 %	≧0.8	304	59.0%	<0.0001	1		0.0349
			<0.8	457	32.7%		1.50	1.03 – 2.18
Neutrophil	0.6551	83.7 %	≧83.7	300	25.9%	<0.0001	1.02	0.59 – 1.78	0.9329
			<83.7	461	53.0%		1
Lymphocyte count	0.4352	2.218 × 103/μL	≧2.218 × 103	60	26.7%	0.0019	1.84	0.92 – 3.81	0.0847
			<2.218 × 103	701	43.6%		1
Neutrophil-to-lymphocyte ratio (N/L)	0.6684	11.1	≧11.1	257	22.5%	<0.0001	2.23	1.29 – 3.91	0.0043
			<11.1	504	54.3%		1
Red blood cell count	0.5163	4.17 × 106/μL	≧4.17 × 106	96	32.9%	0.0309
			≧4.17 × 106	665	43.6%
Hemoglobin	0.5016	13.2 g/dL	≧13.2	51	30.4%	0.0101	2.54	1.34 –4.96	0.0041
			< 13.2	687	43.5%
Hematocrit	0.5011	34.70%	≧34.7	186	37.4%	0.0749
			<34.7	575	43.8%
Mean corpuscular volume (MCV)	0.5433	93.7 fL	≧93.7	295	49.9%	<0.0001	1		0.0001
			<93.7	466	37.5%		2.07	1.43 – 3.02
Red cell distribution width (RDW)	0.5871	16	≧16	474	35.4%	0.0027	1.71	1.19 – 2.46	0.0034
			<16	287	53.4%		1
Platelet count	0.5473	159 × 103/μL	≧159 × 103	605	45.9%	<0.0001	1		0.0007
			<159 × 103	156	28.2%		2.19	1.39 – 3.50

Bold values indicate statistical significance (p<0.05).