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Table 2 Bivariate and multivariable regression associations between socio-demographics, drug use, and injection risk with HCV 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 1.01 1.00‑1.01 < 0.001* 1.01 1.00 1.01 < 0.001*
 Race/ethnicity
  Non-Hispanic Black 0.88 0.75‑1.02 0.094 0.89 0.71‑1.10 0.281
  Hispanic 1.03 0.96‑1.11 0.342 1.09 0.91‑1.31 0.335
  Non-Hispanic White Ref    Ref   
 Biological sex
  Male 0.96 0.88‑1.03 0.264 0.98 0.91‑1.06 0.626
  Female Ref    Ref   
 Sexual orientation       
  Gay/bisexual 0.89 0.81‑0.98 < 0.001* 0.94 0.35‑2.50 0.211
  Straight/heterosexual Ref    Ref   
 Education
  <High school/GED 1.23 1.15‑1.32 < 0.001* 1.13 1.06‑1.21 < 0.001*
  >High school/GED Ref    Ref   
 Income
  $0‑$14,999 1.19 1.11‑1.28 < 0.001* 1.05 0.98‑1.13 0.159
  > $15,000 Ref    Ref   
 Currently homeless 1.29 1.20‑1.39 < 0.001* 1.16 1.08‑1.24 < 0.001*
Drug use
 Heroin injection 1.22 1.12‑1.33 < 0.001* 1.05 0.96‑1.14 0.303
 Cocaine injection 1.09 1.01‑1.18 0.023* 1.02 0.95‑1.10 0.571
 Methamphetamine injection 0.84 0.76‑0.92 < 0.001* 0.94 0.85‑1.05 0.286
 Crack injection 1.26 1.12‑1.42 < 0.001* 1.12 0.99‑1.26 0.068
Injection risk
 Number of injections per day in the last 30 days
  Greater than 7 1.22 1.12‑1.34 < 0.001* 1.14 1.04‑1.24 0.003*
  Less than 7 Ref    Ref   
 Reusing syringes
  Any reusing 1.31 1.16‑1.47 < 0.001* 1.18 1.05‑1.32 0.004*
  No reusing Ref    Ref   
 Sharing works (syringes, cookers, cottons)
  Shared any works 1.24 1.16‑1.33 < 0.001* 1.13 1.05‑1.21 0.001*
  Shared no works Ref    Ref   
 HIV-positive 0.88 0.79‑0.99 0.035* 0.99 0.88‑1.12 0.894
  1. aBivariate logistic regression
  2. bMultivariable logistic regression
  3. *Significant at alpha < 0.05