Table 1.

Demographic and Clinical Characteristics of the Study Population

Variables	All patients (n=110 484)	HCV Genotype 1 (n=88 348)	HCV Genotype 2 (n=13 077)	HCV Genotype 3 (n=8 337)	HCV Genotype 4 (n=1 082)	P-value
Demographics
Age in years mean (SD)	51.9 (6.7)	51.9 (6.6)	52.7 (7.5)	50.2 (6.4)	51.5 (6.3)	<0.0001
Male gender, (%)	97.0	97.0	96.9	97.1	97.4	0.74
Race, (%)						<0.0001
White	52.6	47.5	71.9	76.2	44.3
African American	33.2	39.3	10.1	5.3	37.2
Hispanic	5.6	5.1	7.7	7.4	9.4
Others	1.5	1.5	1.8	1.7	1.3
Missing	7.0	6.6	8.5	9.1	7.3
Period of Service, (%)						<0.0001
World War I/II	4.3	4.1	7.1	2.1	2.8
Vietnam	70.2	70.6	70.3	66.5	70.1
Post-Vietnam	25.5	25.3	22.6	31.4	27.2
Clinical, (%)
Yes of HCV diagnosis
2000–2002	36.0	36.2	35.4	35.5	34.9	0.04
2003–2005	38.5	38.3	39.5	38.1	37.9
2005–2009	25.5	25.4	25.1	26.3	27.2
Diabetes	11.1	11.7	9.3	7.3	13.5	<0.0001
Alcohol use	51.2	51.7	46.4	53.1	52.4	<0.0001
HIV coinfection	4.3	4.6	2.5	2.9	5.7	<0.0001
Body mass index
<18.5	1.3	1.3	0.9	1.3	0.9	<0.0001
18.5–24.9	31.9	32.1	29.4	33.7	28.3
25.0–29.9	39.4	39.6	38.4	38.7	43.5
>30 or higher	28.3	27.9	31.7	27.2	27.9
Antiviral treatment
No treatment	78.5	80.4	70.8	70.6	80.4	<0.0001
Sustained response	6.9	4.9	16.4	14.0	4.7
No response	7.9	8.3	5.4	7.8	8.3
Undeterminable	6.6	6.4	7.4	7.6	6.6