Table 4. Odds ratios for each risk factor for past or chronic HCV infection.

Risk factor	Chronic HCV infection			Past HCV infection
	OR	95%CI	P	OR	95%CI	P
Age (per 1 year increase)	0.99	(0.97–1.01)	0.484	1.02	(0.99–1.05)	0.107
Male sex	1.99	(1.14–3.44)	0.014	1.06	(0.60–1.89)	0.843
Dialysis vintage (per 1 year increase)	1.09	(1.06–1.12)	<0.001	1.09	(1.06–1.13)	0.006

Odds ratios and their 95% confidence intervals were estimated by logistic regression analysis.

Abbreviations: OR, odds ratio; CI, confidence interval.