Table 4

Age-adjusted odds ratio of hepatitis C infection for drug use-related factors in the urban Brazilian population
Risk factors Participants HCV infection n (%) ORadjusted (95% CI)* p-value
Ever use of smoked drugs
 No 14,726 177 (1.2) 1.0 -
 Yes 1,839 38 (2.1) 1.47 (0.88 – 2.46) 0.141
Ever use of inhalated drugs
 No 16,293 206 (1.3) 1.0 -
 Yes 265 09 (3.4) 2.68 (0.85 – 8.45) 0.093
Ever use of sniffed drugs
 No 15,827 189 (1.2) 1.0 -
 Yes 749 25 (3.3) 3.50 (1.87 – 6.54) 0.000
Ever use of injected drugs
 No 16,463 204 (1.2) 1.0 -
 Yes 70 11 (15.7) 12.79 (5.19 – 31.5) 0.000
Injections with glass syringe
 No 13,450 148 (1.1) 1.0 -
 Yes 2,931 63 (2.2) 1.67 (1.09 – 2.56) 0.019
Alcohol consumption
 None 10,237 129 (1.3) 1.0 -
 Light consumption 5,376 67 (1.2) 0.75 (0.50 – 1.12) 0.155
 Heavy consumption 978 16 (1.6) 0.84 (0.41 – 1.69) 0.619
 Dependent 41 03 (7.3) 2.88 (0.79 – 10.49) 0.108

* Adjusted for random effect and age weighted by age groups and regions.

Pereira et al.

Pereira et al. BMC Infectious Diseases 2013 13:60   doi:10.1186/1471-2334-13-60

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