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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: AIDS Care. 2016 Jun 13;28(11):1355–1364. doi: 10.1080/09540121.2016.1189496

Table 3.

Factors Associated with Earlier Time to Virologic Failure (N=3,921).1

Characteristic HR (95%CI) aHR (95%CI)2
Age (per 5 yrs) 0.93 (0.91, 0.96) 0.92 (0.89, 0.95)
Sex at birth
 Male ref ref
 Female 1.52 (1.33, 1.75) 1.32 (1.12, 1.56)
Race/Ethnicity
 Non-Hispanic black 2.18 (1.77, 2.69) 1.75 (1.40, 2.19)
 Non-Hispanic white ref ref
 Hispanic 1.42 (0.95, 2.12) 1.26 (0.83, 1.89)
 Other 1.34 (0.74, 2.44) 1.21 (0.66, 2.21)
 Unknown 1.54 (1.03, 2.31) 1.69 (1.12, 2.55)
Housing status
 Permanent/stable ref ref
 Temporary/unstable 1.53 (1.18, 1.99) 1.19 (0.91, 1.57)
 Homeless 1.76 (1.10, 2.81) 1.58 (0.97, 2.56)
 Other/Unknown 0.71 (0.62, 0.81) 0.87 (0.71, 1.07)
Insurance status
 Public 1.91 (1.59, 2.29) 1.31 (1.07, 1.60)
 Private ref ref
 Other 0.96 (0.79, 1.16) 0.85 (0.65, 1.10)
 Unknown 1.24 (0.61, 2.52) 0.84 (0.41, 1.74)
Mode of transmission
 MSM ref ref
 High risk heterosexual 1.31 (1.12, 1.52) 1.07 (0.88, 1.29)
 IDU 1.36 (1.09, 1.70) 1.17 (0.90, 1.53)
 MSM/IDU 0.75 (0.40, 1.40) 0.64 (0.34, 1.21)
 Perinatal 2.55 (1.87, 3.47) 1.65 (1.11, 2.44)
 Other 1.16 (0.72, 1.87) 1.10 (0.68, 1.77)
 Unknown 1.16 (0.97, 1.40) 1.07 (0.87, 1.30)
Years HIV positive (per 5 years) 1.06 (1.02, 1.11) 1.12 (1.07, 1.17)
CD4 at viral suppression (per 100 cells/μL) 0.90 (0.88, 0.92) 0.89 (0.87, 0.91)
Alcohol abuse
 No ref ref
 Yes 1.36 (1.12, 1.66) 1.17 (0.93, 1.46)
 Unknown 1.30 (1.13, 1.49) 1.25 (1.03, 1.51)
History of substance abuse
 No ref ref
 Yes 1.36 (1.15, 1.60) 1.11 (0.93, 1.33)
 Unknown 1.01 (0.87, 1.18) 0.88 (0.73, 1.07)
Hepatitis C status
 Negative ref ref
 Positive 1.11 (0.90, 1.37) 0.82 (0.64, 1.04)
Hepatitis B status
 Negative ref ref
 Positive 1.04 (0.69, 1.55) 0.92 (0.61, 1.39)
Mental Health/Depression
 No ref ref
 Yes 1.47 (1.28, 1.70) 1.24 (1.06, 1.45)
1

Includes participants who were suppressed at study enrollment or achieved suppression during observation; excludes participants with unknown CD4 cell count or years HIV-diagnosed. Clinic type (hospital vs. CBO) was adjusted for as a random effect in the model.

2

Adjusted for all other variables in the model. Significant hazard ratios and 95% confidence intervals are bolded.