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. Author manuscript; available in PMC: 2011 Dec 1.
Published in final edited form as: J Viral Hepat. 2011 Mar;18(3):161–169. doi: 10.1111/j.1365-2893.2010.01289.x

Table (2).

Associations between HCV high viral load* and participants' demographic, lifestyle and clinical characteristics overall and stratified by their HIV status

Overall
(N=1,266)
HIV negative
(N=795)
HIV-positive
(N=471)

OR (95% CI)
Race
Non Hispanic White Ref Ref Ref
Others 1.1 (0.8-1.5) 1.2 (0.8-1.7) 1.0 (0.6-1.6)
Gender
Male Ref Ref Ref
Female 0.5 (0.3-0.9) 0.6 (0.3-1.0) 0.5 (0.03-7.6)
Age at enrollment (yr)
13-26 Ref Ref Ref
27-35 1.8 (1.3-2.6) 1.7 (1.1-2.7) 1.5 (0.8-2.7)
36-46 1.9 (1.4-2.6) 1.9 (1.3-2.9) 1.5 (0.9-2.7)
47-88 2.3 (1.6-3.2) 2.5 (1.7-3.7) 1.9 (0.9-4.0)
Body Mass Index
<25 Ref Ref Ref
>=25 1.6 (1.2-2.0) 1.8 (1.3-2.4) 1.4 (0.9-2.1)
Alcohol consumption§
 None Ref Ref Ref
 1- < 2 drinks/week 10 (0.7-1.4) 1.2 (0.8-1.8) 0.7 (0.4-1.2)
 2+ drinks/week 1.2 (0.9-1.6) 1.3 (0.9-1.8) 1.1 (0.6-1.8)
Smoking regularly
 Never Ref Ref Ref
 Former 1.3 (0.9-1.9) 1.4 (0.9-2.3) 1.2 (0.6-2.4)
 Current 1.2 (0.9-1.6) 1.2 (0.9-1.7) 1.2 (0.7-1.8)
Hemophilia type
 A Ref Ref Ref
 B 10 (0.7-1.4) 1.1 (0.8-1.6) 1.0 (0.5-1.9)
 Others 0.6 (0.4-1.0) 0.8 (0.5-1.2) 0.2 (0.01-3.3)
Hemophilia severity
Severe Ref Ref Ref
Moderate 1.1 (0.8-1.6) 1.2 (0.8-1.9) 1.2 (0.7-2.1)
Mild 0.8 (0.6-1.1) 1.0 (0.7-1.4) 0.8 (0.4-1.6)
Duration of HCV infection (yr)
11-21 Ref Ref Ref
22-27 1.4 (1.0-1.9) 1.1 (0.8-1.7) 1.4 (0.7-2.8)
28-32 1.7 (1.2-2.5) 1.9 (1.2-3.1) 1.1 (0.6-2.5)
33-55 2.4 (1.7-3.4) 2.5 (1.6-3.9) 1.7 (0.8-3.5)
Calendar year at HCV infection
1947-1969 Ref Ref Ref
1970-1975 0.9 (0.6-1.3) 0.8 (0.5-1.2) 1.1 (0.6-1.8)
1976-1980 0.6 (0.4-0.9) 0.5 (0.3-0.7) 0.9 (0.5-1.6)
1981-1990 0.5 (0.3-0.7) 0.4 (0.3-0.6) 1.0 (0.5-2.1)
Age at HCV infection
0-2 Ref Ref Ref
3-7 1.4 (1.0-2.0) 1.3 (0.8-2.1) 1.4 (0.8-2.4)
8-15 1.6 (1.2-2.3) 2.0 (1.3-3.1) 1.3 (0.7-2.2)
16-60 1.5 (1.1-2.2) 1.9 (1.3-2.9) 1.4 (0.6-3.0)
Age at infection/duration
Before age 10, for ≤25 years Ref Ref Ref
Before age 10, for >25 years 2.0 (1.4-2.8) 2.3 (1.5-3.7) 1.2 (0.7-2.1)
At/after age 10, for ≤25 years 1.3 (0.9-1.9) 1.4 (0.9-2.2) 1.3 (0.5-3.2)
At/after age 10, for >25 years 2.1 (1.5-2.9) 2.5 (1.7-3.6) 1.3 (0.7-2.5)
HCV genotype
 1 Ref Ref Ref
 2 or 3 1.2 (0.9-1.7) 1.4 (0.9-2.1) 0.9 (0.5-1.6)
 others 1.2 (0.7-2.1) 1.2 (0.5-2.6) 1.1 (0.4-2.6)
HBV co-infection
Uninfected Ref Ref Ref
Chronic 1.3 (0.5-2.3) 1.0 (0.4-2.6) 1.0 (0.3-2.9)
Resolved 1.6 (1.2-2.1) 1.7 (1.2-2.4) 1.2 (0.7-2.0)
Undetermined 1.4 (1.0-1.9) 1.3 (0.9-1.9) 1.2 (0.7-2.1)
HIV co-infection
No Ref N/A
Yes 1.5 (1.2-1.9)
Current antiretroviral therapy
None Ref
Combination N/A 1.7 (1.1-2.8)
Other 1.7 (0.9-3.2)
*

High viral load is >2 million copies/ml

Odds ratios (OR) and 95% confidence intervals (CI) comparing subjects with high HCV viral load to those with low viral load

Underlined OR are significant at p<0.05

§

In the past 3 months