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Table 1 Patient Characteristics at Study Entry (n = 278)

From: Predictive validity of a brief antiretroviral adherence index: Retrospective cohort analysis under conditions of repetitive administration

Characteristic  
Sex [n (%)]  
Female 33 (12)
Male 245 (88)
HIV Transmission Risk Factor [n (%)]  
MSM1, not IDU2 179 (64)
Heterosexual contact 52 (19)
IDU 23 (8)
Other/Unknown 24 (9)
Race/Ethnicity [n (%)]  
White 130 (47)
Black 30 (11)
Hispanic 87 (31)
Other/Unknown 31 (11)
Age (years)  
[mean (sd)] 39.5 (9.2)
[median (range)] 39 (19–77)
ART3 Treatment Experience [n (%)]  
Naive 168 (60)
Experienced 110 (40)
Baseline absolute CD4  
[mean (sd)] 201 (163)
[median (range)] 173 (0–883)
Baseline log10 HIV-1 Plasma Viral Load  
[mean (sd)] 4.9 (0.7)
[median (range)] 5.0 (2.7–6.3)
Days on new regimen  
[median (range)] 286 (30–1221)
Year of study entry [n (%)]  
2003 51 (18)
2004 103 (37)
2005 81 (29)
2006 43 (16)
New Regimen Type4 [n(%)]  
NNRTI & ≥ 2 NRTIs 63 (23)
PIb & ≥ 2 NRTIs 204 (73)
NNRTI & PIb & ≥ 1 NRTI 8 (3)
≥ 2 NRTI 3 (1)
# Adherence Scores per patient  
[median (range)] 4 (1–27)
  1. 1. MSM: men having sex with men.
  2. 2. IDU: injection drug use.
  3. 3. ART: antiretroviral therapy
  4. 4. NNRTI: non-nucleoside reverse transcriptase inhibitor; NRTI: nucleoside/nucleotide reverse transcriptase inhibitor; PIb: ritonavir boosted protease inhibitor.