Table 1. Comparison of clinical characteristic between groups

Variables	Group 1(n = 12,537)				Group 2(n = 5,573)
		BNP(n = 3,093)	NT-proBNP(n = 9,444)	P value1)		P value2)
Male gender	7,331 (58.5%)	1,796 (58.1%)	5,535 (58.6%)	0.595	3,266 (58.6%)	0.871
Age (year)	2.74 ± 2.05	2.79 ± 2.07	2.72 ± 2.04	0.089	2.75 ± 2.04	0.692
Body weight (kg)	13.95 ± 5.76	14.09 ± 5.87	13.91 ± 5.72	0.128	13.95 ± 5.81	0.993
Height (cm)	91.64 ± 17.13	92.04 ± 17.41	91.50 ± 17.03	0.132	91.83 ± 17.41	0.529
BSA (m2)	0.582 ± 0.173	0.586 ± 0.176	0.581 ± 0.171	0.114	0.584 ± 0.172	0.394
Days before Tx	5.1 ± 1.8	5.3 ± 1.8	5.0 ± 1.7	< 0.001	5.3 ± 1.8	0.010
Complete presentation	8,345 (66.6%)	2,017 (65%)	6,328 (67.0%)	0.098	3,951 (70.9%)	< 0.001
Resistance to initial IVIG	1,960 (15.6%)	469 (15.2%)	1,491 (15.8%)	0.407	642 (11.5%)	< 0.001
Laboratory findings
WBC (× 1,000 /μL)	14.0 ± 5.6	13.7 ± 5.2	14.1 ± 5.7	0.001	14.2 ± 5.5	0.005
Neutrophil (%)	62.9 ± 16.6	62.0 ± 16.9	63.2 ± 16.5	0.001	63.6 ± 16.2	0.009
Hemoglobin (g/dL)	11.4 ± 1.1	11.5 ± 1.1	11.4 ± 1.0	0.102	11.4 ± 1.0	0.538
Platelet (× 1,000 /μL)	353.8 ± 116.0	346.8 ± 115.7	356.1 ± 116.0	< 0.001	350.1 ± 113.7	0.052
CRP (mg/dL)	7.76 ± 8.03	8.05 ± 9.07	7.67 ± 7.67	0.039	7.89 ± 6.69	0.349
Protein (g/dL)	6.59 ± 0.65	6.71 ± 0.64	6.55 ± 0.65	< 0.001	6.58 ± 0.61	0.158
Albumin (g/dL)	3.89 ± 0.45	3.92 ± 0.47	3.87 ± 0.45	< 0.001	3.92 ± 0.42	< 0.001
AST (U/L)	86.9 ± 165.1	85.9 ± 165.1	87.3 ± 165.1	0.701	87.6 ± 157.8	0.815
ALT (U/L)	92.0 ± 147.6	85.9 ± 142.8	94.1 ± 149.1	0.008	94.7 ± 146.1	0.260
Total bilirubin (mg/dL)	0.63 ± 0.81	0.61 ± 0.73	0.64 ± 0.83	0.104	0.67 ± 0.85	0.013
Na+ (mEq/L)	136.6 ± 2.7	135.9 ± 2.7	136.8 ± 2.7	< 0.001	136.5 ± 2.7	0.159
BNP (pg/mL)		314.4 ± 1,290.0
LT-BNP		4.44 ± 1.42
NT-proBNP (pg/mL)			1,241.2 ± 2,851.6
LT-NT-proBNP			6.01 ± 1.48
Pyuria	4,424 (35.3%)	991 (32.0%)	3,433 (36.4%)	< 0.001	1,907 (34.2%)	0.598

Comparison between two subgroups (BNP Vs. NT-proBNP).
Comparison between two groups.
BNP: B-type natriuretic peptide; NT-proBNP: N terminal pro-B-type natriuretic peptide; BSA: body surface area; Tx: treatment; inj. Injection; IVIG: intravenous immunoglobulin; WBC: white blood cell; CRP: C-reactive protein; AST: aspartate aminotransferase; ALT: alanine aminotransferase; LT-BNP: log transformed BNP; LT-NT-proBNP: log transformed NT-proBNP.