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Table 3 Associations between substance use practices and unprotected sex for IDUs and non-IDUs

From: Comparing sexual risks and patterns of alcohol and drug use between injection drug users (IDUs) and non-IDUs who report sexual partnerships with IDUs in St. Petersburg, Russia

  All participants N = 396 IDUs n = 331 Non-IDUS n = 65
  uOR aOR*4 uOR aOR*4 uOR aOR*4
Male 0.8 (0.5-1.2)   1.0 (0.5-1.3)   1.1 (0.4-3.3)  
HIV 1.1 (0.7-1.8)   1.2 (0.7-2.0)   (insufficient n)  
Log age 1.5 (0.6-3.7)   1.3 (0.4-3.9)   4.6 (0.5-45.8)*  
Married/partnered 2.5 (1.6-3.9)*** 2.5 (1.5-4.1)*** 2.7 (1.7-4.5)*** 2.4 (1.4-4.1) 1.9 (0.5-7.9)  
Any casual partner 0.9 (0.6-1.4)   0.8 (0.5-1.3)   0.7 (0.2-2.8)  
Injection drug use last 6 months 0.6 (0.3-1.1)** 0.4 (0.2-0.7)*** -   -  
Meth use, injected or not, last 30 days *1 1.9 (1.0-3.5)** 2.0 (1.1-3.9)** 1.9 (1.0-3.6)** 2.0 (1.0-3.9)*** 2.8 (0.3-24.7)  
Injected > 20 times/month -   1.0 (0.7-1.6)   -  
Unsafe injection last 30 days -   2.1 (1.2-3.7)***   -  
Risky alcohol use*2 1.1 (0.7-1.8)   0.9 (0.5-1.4)   6.7 (1.4-31.4)** 6.7 (1.4-31.4)**
Had sex when high on drugs or alcohol*3 3.7 (2.3-5.8)*** 3.8 (2.4-6.3)*** 4.8 (2.8-8.1)*** 4.6 (2.7-7.8)*** 1.8 (0.6-5.5)  
  1. * p< = 0.2
  2. ** p < = 0.05
  3. *** p < = 0.01
  4. *1 99% of methamphetamine use was in the form of injection among IDUs
  5. *2 determined by an at-risk AUDIT-C score
  6. *3 had sex while participant or partner or both were drunk or high
  7. *4 also controlled for education, employment, homelessness, incarceration, living with family and having legal income. These variables were not significant
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