Table 2. Prediction of resistance to IVIG on logistic regression analysis in the BNP group selected through propensity score matching

Variables	Univariate analysis				Multivariate analysis
	OR	95% CI	Nagelkerke R2	P value	OR	95% CI	P value
Age (year)	1.136	1.081–1.194	0.018	< 0.001
Body weight (kg)	1.047	1.030–1.065	0.021	< 0.001
Height (cm)	1.016	1.009–1.022	0.018	< 0.001
BSA (m2)	4.880	2.737–8.698	0.021	< 0.001	2.802	1.395–5.630	0.004
Neutrophil (%)	1.037	1.029–1.045	0.064	< 0.001	1.017	1.008–1.027	< 0.001
Platelet (× 1,000 /μL)	0.998	0.997–0.999	0.015	< 0.001	0.999	0.998–1.000	0.038
CRP (mg/dL)	1.040	1.022–1.058	0.017	< 0.001	1.002	0.990–1.013	0.790
Albumin (g/dL)	0.486	0.390–0.606	0.030	< 0.001	0.589	0.466–0.745	< 0.001
AST (U/L)	1.001	1.001–1.002	0.019	< 0.001
ALT (U/L)	1.002	1.001–1.002	0.022	< 0.001	1.001	1.000–1.001	0.061
Total bilirubin (mg/dL)	1.650	1.465–1.858	0.049	< 0.001	1.281	1.114–1.473	0.001
Na+ (mEq/L)	0.903	0.867–0.939	0.019	< 0.001	0.979	0.938–1.022	0.328
BNP (pg/mL)	1.000	1.000–1.000	0.029	< 0.001
LT-BNP	1.240	1.152–1.334	0.024	< 0.001
Z score	1.357	1.223–1.506	0.024	< 0.001	1.203	1.073–1.350	0.002
Pyuria	1.457	1.167–1.819	0.008	0.001	1.110	0.865–1.424	0.412

IVIG: intravenous immunoglobulin; BNP: B-type natriuretic peptide; OR: odds ratio; CI: confidence interval; BSA: body surface area; CRP: C-reactive protein; AST: aspartate aminotransferase; ALT: alanine aminotransferase; LT-BNP: log transformed BNP.