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. Author manuscript; available in PMC: 2017 Mar 27.
Published in final edited form as: AIDS. 2016 Mar 27;30(6):889–898. doi: 10.1097/QAD.0000000000001003

Table 2.

Adjusted Geometric Means for Non-Invasive Serum Biomarkers within Specific Subgroups, Based on Cross-Sectional Analysis*

APRI FIB-4

Characteristic/Level Adjusted
Geometric
Mean (SE)
Relative
Increase (vs
reference
category)
P-value Adjusted
Geometric
Mean (SE)
Relative
Increase (vs
reference
category)
P-value
Including all participants from all cohorts
Cohort <0.001 0.011
    REACH HIV-uninfected 0.20 (0.07) REF 0.36 (0.04) REF
    REACH Behaviorally HIV+ 0.26 (0.04) 31.3% 0.42 (0.02) 15.1%
    P219/C Behaviorally HIV+ 0.25 (0.05) 27.5% 0.39 (0.03) 7.9%
    P219/C Perinatally HIV+ 0.27 (0.02) 38.5% 0.41 (0.01) 11.8%
HIV Infection Status <0.001 0.003
    HIV-uninfected 0.20 (0.07) REF 0.36 (0.04) REF
    HIV-infected 0.27 (0.02) 35.1% 0.41 (0.01) 12.1%
Age group 0.19 <0.001
    15–16 0.26 (0.03) REF 0.36 (0.02) REF
    17–18 0.25 (0.03) −1.1% 0.41 (0.02) 14.5%
    19–20 0.27 (0.04) 5.7% 0.47 (0.02) 30.9%
Gender <0.001 <0.001
    Female 0.24 (0.03) REF 0.38 (0.01) REF
    Male 0.30 (0.03) 26.3% 0.44 (0.02) 13.6%
Race/Ethnicity 0.71 0.048
    White NH 0.26 (0.05) REF 0.37 (0.03) REF
    Black NH 0.26 (0.02) 0.3% 0.41 (0.01) 10.6%
    Other NH 0.27 (0.11) 5.3% 0.41 (0.06) 12.0%
    Hispanic 0.27 (0.04) 3.6% 0.41 (0.02) 10.6%
BMI Z-score 0.09 <0.001
    >2 0.25 (0.07) REF 0.35 (0.04) REF
    +1 to +2 0.25 (0.04) 0.8% 0.38 (0.02) 7.5%
    −1 to 1 0.26 (0.02) 3.1% 0.41 (0.01) 17.2%
    < −1 0.29 (0.05) 14.0% 0.45 (0.03) 28.9%

Restricted to HIV-Infected Participants
Route of HIV Infection 0.006 0.64
    Behavioral 0.25 (0.04) REF 0.40 (0.02) REF
    Perinatal 0.27 (0.02) 9.2% 0.41 (0.01) 1.3%
CD4 Count <0.001 <0.001
    350 or more 0.25 (0.02) REF 0.39 (0.01) REF
    <350 0.30 (0.04) 16.1% 0.45 (0.02) 15.1%
HIV RNA viral load <0.001 <0.001
    <400 0.24 (0.04) REF 0.37 (0.02) REF
    400 – 10,000 0.27 (0.03) 14.5% 0.42 (0.02) 12.8%
    10,000 or more 0.30 (0.03) 27.6% 0.44 (0.02 18.5%
ARV Regimen 0.96 0.75
    HAART w/PI 0.26 (0.03) REF 0.41 (0.02) REF
    HAART w/out PI 0.27 (0.06) 1.4% 0.39 (0.03) −3.0%
    Non-HAART ARV 0.27 (0.05) 2.3% 0.41 (0.03) 1.5%
    Not on ARVs 0.27 (0.04) 1.2% 0.41 (0.02) 1.8%
Didanosine use 0.011 0.003
    Did not use ddI 0.26 (0.02) REF 0.40 (0.01) REF
    Used ddI 0.29 (0.05) 11.3% 0.45 (0.03) 11.2%
*

Cross-sectional analysis based on first LFT within age 15–20 years for REACH and 219C behaviorally HIV-infected, and most recent within age 15–20 years for perinatally HIV-infected.

P-value is from linear regression model for log-transformed biomarker, comparing means across covariate categories. Means within overall population are adjusted for age, sex, race/ethnicity, BMI z-score, and HIV status, and among analyses restricted to HIV-infected participant are adjusted for age, sex, race/ethnicity, BMI z-score, route of exposure, CD4 count, and viral load.