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Table 3 Binary dependent variables measured repeatedly over the course of Aristotle (past 12 months: frequency of injecting drugs, receptive syringe sharing, dividing drugs with a syringe someone else had already used and condom use) regressed against covariates (Aristotle round and awareness of HIV status). Results from multivariable piecewise Generalized Estimating Equation analyses (Aristotle, 2012–2013, participants = 3320, observations = 7110, adjustment for gender, age, origin, homelessness, education, history of imprisonment, and history of Opioid Maintenance Treatment)

From: High-risk behaviors and their association with awareness of HIV status among participants of a large-scale prevention intervention in Athens, Greece

Awareness of HIV statusInjecting drugs at least once per day versus less than once per dayDividing drugs at least half of the time the participant injected drugs with a syringe someone else had used before versus less than half of the timeReceptive syringe sharing at least half of the time the participant injected drugs versus receptive sharing less than half of timesCondom use “always” or “usually yes” versus “usually no” or “never”
FemalesMales
Round B vs. Round AOR (95% CI)
 HIV (+) aware (AHS)0.34 (0.19, 0.61)0.10 (0.04, 0.23)0.53 (0.31, 0.91)0.92 (0.25, 3.35)1.65 (0.78, 3.50)
 HIV (+) unaware (UHS)0.37 (0.25, 0.57)0.37 (0.19, 0.72)0.67 (0.45, 0.99)0.62 (0.22, 1.79)1.35 (0.79, 2.29)
 HIV (−)0.37 (0.32, 0.42)0.48 (0.36, 0.64)0.75 (0.65, 0.86)1.40 (0.95, 2.05)0.99 (0.85, 1.17)
Round B vs. Round E
 HIV (+) aware (AHS)0.84 (0.74, 0.96)1.10 (0.81, 1.50)0.81 (0.71, 0.93)0.86 (0.64, 1.17)1.24 (1.01, 1.52)
 HIV (+) unaware (UHS)0.94 (0.76, 1.18)0.96 (0.64, 1.44)0.96 (0.77, 1.20)0.88 (0.50, 1.55)1.21 (0.88, 1.67)
 HIV (−)0.95 (0.90, 1.01)0.80 (0.70, 0.91)0.96 (0.91, 1.01)0.96 (0.85, 1.08)0.94 (0.89, 0.99)
  1. Statistically significant ORs are in bold
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