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. Author manuscript; available in PMC: 2016 Jun 7.
Published in final edited form as: J Acquir Immune Defic Syndr. 2016 Jun 1;72(2):206–213. doi: 10.1097/QAI.0000000000000954

Table 4. Assessing whether addition of inflammatory biomarkers to Cox regression models attenuates the association between HIV infection (stratified by HIV-1 RNA at baseline) and mortality.

Hazard Ratio (95% Confidence Interval)
Unadjusted for IL-6, sCD14 or D-dimer Adjusted for IL-6, sCD14 and D-dimer Unadjusted for IL-6, sCD14 or D-dimer Adjusted for IL-6, sCD14 and D-dimer
Model 1 Model 1 Model 2 Model 2
N (# deaths) 2324 (411) 2324 (411) 2324 (411) 2324 (411)
HIV uninfected 1 (ref) 1 (ref) 1 (ref) 1 (ref)
HIV+ HIV-1 RNA<500 copies/mL 1·12 (0·89-1·42) 1·20 (0·94-1·53) 1·04 (0·80-1·35) 1·09 (0·84-1·42)
HIV+ HIV-1 RNA 500-9999 copies/mL 1·55 (1·09-2·19) 1·58 (1·11-2·24) 1·34 (0·93-1·92) 1·42 (0·99-2·05)
HIV+ HIV-1 RNA ≥10000 copies/mL 2·94 (2.22-3·91) 2·29 (1·72-3·07) 2·18 (1·60-2·99) 2·00 (1·45-2·76)

Model 1 additionally adjusted for age and race-ethnicity.

Model 2 additionally adjusted for age, race-ethnicity, prevalent cardiovascular disease, diabetes, cancer, chronic obstructive pulmonary disease, hypertension, smoking, hepatitis C, BMI, total cholesterol and cholesterol lowering medication, alcohol use, cocaine use, hemoglobin, FIB-4, estimated glomerular filtration rate.

IL-6, sCD14 and D-dimer quartile thresholds were defined using quartile levels (25th, 50th, and 75th percentiles) among those who died. For, IL-6 these thresholds were 1·727, 2·91, and 5·043 pg/mL. For sCD14: 1592·84, 1883·51, and 2334·18 ug/mL. For D-dimer: 0·23, 0·39, and 0·86 ug/mL