Skip to main content

Table 3 Bivariate and multivariable regression associations between socio-demographics, drug use, and injection risk with HIV infection

From: Baseline prevalence and correlates of HIV and HCV infection among people who inject drugs accessing a syringe services program; Miami, FL

Variable Bivariate associations Full model
ORa 95% CI P value aORb 95% CI P value
Demographics
 Age 1.00 1.00‑1.01 < 0.001* 1.00 1.00‑1.01 < 0.001*
 Race/ethnicity
  Non-Hispanic Black 1.24 1.13‑1.36 < 0.001* 1.28 1.13‑1.45 < 0.001*
  Hispanic 1.06 1.01-1.10 0.013* 1.12 1.02-1.24 0.024*
  Non-Hispanic White Ref    Ref   
 Biological sex
  Male 1.01 0.96‑1.06 0.742 0.98 0.94‑1.02 0.315
  Female Ref    Ref   
 Sexual orientation
  Gay/bisexual 1.39 1.32‑1.46 < 0.001* 1.22 1.16‑1.29 < 0.001*
  Straight/heterosexual Ref    Ref   
 Education
  <High school/GED 0.97 0.93‑1.01 0.151 1.01 0.97‑1.05 0.565
  >High school/GED Ref    Ref   
 Income
  $0‑$14,999 1.00 0.95‑1.04 0.820 1.00 0.96‑1.04 0.846
  > $15,000 Ref    Ref   
 Currently homeless 1.00 0.96‑1.05 0.866 1.02 0.97‑1.06 0.482
Drug use
 Heroin injection 0.80 0.76‑0.84 < 0.001* 0.92 0.87‑0.97 0.001*
 Cocaine injection 0.96 0.91‑1.01 0.075 0.98 0.94‑1.02 0.422
 Methamphetamine injection 1.38 1.31‑1.46 < 0.001* 1.22 1.15‑1.29 < 0.001*
 Crack injection 0.95 0.88‑1.02 0.165 0.96 0.89‑1.02 0.178
Injection risk
 Number of injections per day in the last 30 days
  Greater than 7 0.95 0.90‑1.01 0.087 0.98 0.93‑1.03 0.438
  Less than 7 Ref    Ref   
 Reusing syringes
  Any reusing 0.84 0.78‑0.90 0.001* 0.97 0.91‑1.04 0.384
  No reusing Ref    Ref   
 Sharing works (syringes, cookers, cottons)
  Shared any works 0.97 0.93‑1.01 0.127 0.99 0.95‑1.03 0.516
  Shared no works Ref    Ref   
 HCV-positive 0.96 0.92‑0.99 0.035 1.00 0.96‑1.04 0.894
  1. aBivariate logistic regression
  2. bMultivariable logistic regression
  3. *Significant at alpha < 0.05