Table 5 Stepwise logistic regression analysis of factors significantly associated with positive serum antinuclear antibody (ANA) in 447 patients with chronic hepatitis C infection

Dependent variable	Independent variable	Comparison	OR (95% CI)	p Value
ANA
	Fibrosis	F 3–4 = 1	2.344 (1.503 to 3.654)	<0.001
	Fibrosis	F 0–2 = 0	2.344 (1.503 to 3.654)	<0.001
	Age	Per 1 year increase	1.029 (1.010 to 1.049)	0.003
	HCV RNA level	Per one log increase	0.733 (0.595 to 0.904)	0.004

HCV, hepatitis C virus.