Table 5.

Logistic regression analysis of training set

Variables	Univariate Logistic regression					Multivariate Logistic regression
	β	S.E.	Z	P	OR (95% CI)	β	S.E.	Z	P	OR (95% CI)	VIF
Hospitalized within six months
No					1.00 (Reference)					1.00 (Reference)
Yes	1.19	0.38	3.14	0.002	3.28 (1.56-6.88)	1.45	0.41	3.54	< 0.001	4.26 (1.91-9.48)	1.006
WBC	0.14	0.07	2.17	0.030	1.15 (1.01-1.31)	0.18	0.07	2.44	0.015	1.19 (1.03-1.37)	1.039
Hb	-0.01	0.01	-1.78	0.075	0.99 (0.97-1.00)	-0.01	0.01	-1.41	0.158	0.99 (0.97-1.00)	1.013
ALT	0.01	0.01	1.99	0.046	1.02 (1.01-1.03)	0.02	0.01	2.52	0.012	1.02 (1.01-1.04)	1.031
AST	0.02	0.01	1.80	0.072	1.02 (1.00-1.04)	0.01	0.01	1.19	0.232	1.01 (0.99-1.03)	1.024
Ferritin	0.01	0.00	4.26	< 0.001	1.01 (1.01-1.01)	0.01	0.00	4.27	< 0.001	1.01 (1.01-1.01)	1.020

Abbreviations: OR, odds ratio; CI, confidence interval; VIF, variance inflation factor; WBC, white blood cell; Hb, hemoglobin; ALT, alanine aminotransferase; AST, aspartate aminotransferase.