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. Author manuscript; available in PMC: 2012 Dec 1.
Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2011 Oct 25;20(12):2512–2517. doi: 10.1158/1055-9965.EPI-11-0582

Table 1.

Distribution of cohort baseline characteristics and Cox proportional hazard regression models for FIB-4 in relation to hepatocellular carcinoma, among 22,980 HIV-infected veterans from the Veterans Aging Cohort Study Virtual Cohort

Hepatocellular Carcinoma Cox Regression Models
Yes (N=112)
N (%)
No (N=22868)
N (%)
Age-and race-adjusted*
HR(95% CI)
Multivariate-adjusted
HR(95% CI)
FIB-4 Low (<1.45) 17 (15%) 12802 (56%) 1.0 (ref) 1.0 (ref)
Intermediate(1.45–3.25) 54 (48%) 7543 (33%) 4.2 (2.4,7.4) 3.6 (2.1,6.4)
High (>3.25) 41 (37%) 2523 (11%) 13.0 (7.2,23.4) 9.6 (5.2,17.4)
Age <35 3 (3%) 2545 (11%) 1.0 (ref) 1.0 (ref)
35–39 8 (7%) 3104 (14%) 2.2 (0.6,8.5) 1.5 (0.4,5.9)
40–44 14 (13%) 4801 (21%) 2.7 (0.8,9.3) 1.2 (0.3,4.5)
45–49 37 (33%) 5261 (23%) 7.2 (2.2,23.5) 2.9 (0.9,10.1)
50–54 21 (19%) 3373 (15%) 6.7 (2.0,22.7) 2.6 (0.7,9.3)
55–59 16 (14%) 1906 (8%) 13.5 (3.9,46.5) 5.2 (1.4,18.8)
≥60 13 (12%) 1878 (8%) 10.1 (2.9,35.7) 4.0 (1.1,14.6)
Race/ethnic group Non-Hispanic white 47 (42%) 8253 (36%) 1.0 (ref) 1.0 (ref)
Non-Hispanic black 51 (46%) 11722 (51%) 0.9 (0.6,1.3) 0.7 (0.4,1.0)
Hispanic 13 (12%) 1748 (8%) 1.1 (0.6,2.1) 0.9 (0.5,1.8)
Other/unknown 1 (1%) 1145 (5%) 0.3 (0,2.4) 0.3 (0,2.2)
Enrollment year 1996 49 (44%) 6663 (29%) 1.0 (ref) 1.0 (ref)
1997–1999 32 (29%) 6378 (28%) 0.9 (0.6,1.4) 0.9 (0.6,1.4)
2000–2002 22 (20%) 4073 (18%) 1.8 (1.0,3.1) 2.0 (1.0,3.6)
2003–2005 7 (6%) 4011 (18%) 1.5 (0.6,3.6) 1.4 (0.4,4.2)
2006–2007 2 (2%) 1743 (8%) 5.1 (1.0,25.5) 5.0 (0.9,27.9)
CD4 count (cells/μl) ≥500 20 (18%) 4667 (20%) 1.0 (ref) 1.0 (ref)
200–499 54 (48%) 8348 (37%) 1.3 (0.8,2.2) 1.1 (0.7,1.9)
<200 29 (26%) 7730 (34%) 1.0 (0.5,1.7) 0.7 (0.4,1.3)
Unknown 9 (8%) 2123 (9%) 1.0 (0.5,2.3) 1.1 (0.5,2.5)
HIV-1 RNA copies/mL <500 32 (29%) 5265 (23%) 1.0 (ref) 1.0 (ref)
≥500 69 (62%) 15485 (68%) 0.8 (0.5,1.3) 0.8 (0.5,1.2)
Unknown 11 (10%) 2118 (9%) 0.8 (0.4,1.6) 0.7 (0.3,1.5)
Antiretroviral therapy use No 99 (88%) 17774 (78%) 1.0 (ref) 1.0 (ref)
Yes 13 (12%) 5094 (22%) 1.7 (0.9,3.3) 1.3 (0.6,3.1)
Hepatitis B virus infection Negative 74 (66%) 18226 (80%) 1.0 (ref) 1.0 (ref)
Positive 30 (27%) 1412 (6%) 5.9 (3.9,9.1) 5.8 (3.7,9)
Unknown 8 (7%) 3230 (14%) 0.6 (0.3,1.2) 0.9 (0.4,2.0)
Hepatitis C virus infection Negative 35 (31%) 12133 (53%) 1.0 (ref) 1.0 (ref)
Positive 65 (58%) 6847 (30%) 3.4 (2.2,5.2) 2.9 (1.8,4.6)
Unknown 12 (11%) 3888 (17%) 0.7 (0.3,1.4) 0.9 (0.4,2.0)
Alcohol abuse/dependence No 89 (79%) 18190 (80%) 1.0 (ref) 1.0 (ref)
Yes 23 (21%) 4678 (20%) 1.2 (0.8,2.0) 0.9 (0.6,1.5)
Diabetes No 105 (94%) 21759 (95%) 1.0 (ref) 1.0 (ref)
Yes 7 (6%) 1109 (5%) 2.1 (1.0,4.6) 1.6 (0.7,3.5)
*

Race is age-adjusted and age is race-adjusted.

HR, hazard ratio;

CI, confidence interval.

Adjusted for age, race/ethnic group, enrollment year, CD4 count, viral load, ART use, HBV and HCV infection, alcohol abuse/dependency, and diabetes