Table 2 Exposure risks with significant associations comparing HCV antibody positive and negative men who have sex with men from Zurich, stratified by HIV diagnosis
Factor (exposure risk) | HCV pos.1 | HCV neg. | Fisher’s2 | OR3 | 95% CI4of OR | |||
|---|---|---|---|---|---|---|---|---|
(Without substitution of missing values) | n | % | n | % | ||||
HIV 5 diagnosis | Â | Â | Â | Â | Â | Â | Â | Â |
Total sample (n = 840) | Yes | 4 | 21.1 | 15 | 78.9 | 0.000 | 72.70 | 14.95-353.56 |
No | 3 | 0.4 | 818 | 99.6 | ||||
Non-Swiss origin | Â | Â | Â | Â | Â | Â | Â | Â |
Total sample (valid n = 769) | Yes | 5 | 2.8 | 173 | 97.2 | 0.009 | 8.51 | 1.64-18.75 |
No | 2 | 0.3 | 589 | 99.7 | ||||
No known HIV infection (valid n = 752) | Yes | 1 | 0.6 | 171 | 99.4 | 0.542 | 1.69 | 0.15-18.75 |
No | 2 | 0.3 | 578 | 99.7 | ||||
HIV diagnosed (valid n = 17) | Yes | 4 | 66.7 | 2 | 33.3 | 0.006 | n.a. 7 |  |
No | 0 | 0.0 | 11 | 100.0 | ||||
Tattooed | Â | Â | Â | Â | Â | Â | Â | Â |
Total sample (valid n = 727) | Yes | 5 | 3.4 | 140 | 96.6 | 0.004 | 10.36 | 1.99-53.94 |
No | 2 | 0.3 | 580 | 99.7 | ||||
No known HIV infection (valid n = 710) | Yes | 2 | 1.4 | 137 | 98.6 | 0.100 | 8.32 | 0.75-92.43 |
No | 1 | 0.2 | 570 | 99.8 | ||||
HIV diagnosed (valid n = 17) | Yes | 3 | 50.0 | 3 | 50.0 | 0.099 | 10.00 | 0.74-135.33 |
No | 1 | 9.1 | 10 | 90.9 | ||||
NIDU 6 of cocaine or amphetamines NIDU only | Â | Â | Â | Â | Â | Â | Â | Â |
Total sample (valid n = 727) | Yes | 4 | 4.0 | 95 | 96.5 | 0.012 | 8.77 | 1.93-39.81 |
No | 3 | 0.5 | 625 | 99.5 | ||||
No known HIV infection (valid n = 710) | Yes | 0 | 0.0 | 91 | 100.0 | 0.621 | n.a. |  |
No | 3 | 0.5 | 616 | 99.5 | ||||
HIV diagnosed (valid n = 17) | Yes | 4 | 50.0 | 4 | 50.0 | 0.053 | n.a. |  |
No | 0 | 0.0 | 9 | 100.0 | ||||