Table 2. Multivariate analyses for HBsAg-/HBsAb-positivity.

	Univariate Analysis		Multivariate Analysis
Variable	P value	OR (95% CI)	P value	OR (95% CI)
Age	0.788	1.009 (0.948–1.073)
Gender	0.201	2.917 (0.565–15.063)
Body mass index	0.823	0.980 (0.817–1.175)
ALT	0.558	0.984 (0.933–1.038)
AST	0.202	0.928 (0.828–1.041)
Bilirubin	0.143	0.069 (0.002–2.455)
Sphingosine-1-phosphate	0.0004	0.977 (1.964–0.990)	0.007	0.977 (0.961–0.994)
Sphinganine-1-phosphate	0.0004	0.929 (0.893–0.968)
C16-ceramide	0.0008	0.898 (0.843–0.957)	0.012	0.911 (0.847–0.980)

Abbreviations: OR, odds-ratio; CI, confidence interval; ALT, alanine transferase; AST, aspartate transferase.