Table 2. Chi-Square Test for Differences in Prevalence by Potential Risk Factors.

	HBsAg		HCVAb
	Pvalue for Pearson Chi Square	Pvalue for Chi Square for Trend	Pvalue for Pearson Chi Square	Pvalue for Chi Square for Trend
Age group	0.151	-	0.273	-
Male	0.114	0.004	0.646	0.876
Female	0.145	0.007	0.806	0.570
Total	0.013	> 0.001	0.513	0.674
Race	0.268	-	0.772	-
Marital status	0.001	-	0.59	-
Literacy level	0.926	-	0.164	-
Past surgical history	0.798	-	0.438	-
Smoking	0.661	-	0.473	-
Alcohol use	0.593	-	0.821	-
Job status	0.076	-	0.389	-

Abbreviations: HBsAg, hepatitis B surface antigen; HCVAb, hepatitis C virus antibody.