Table 2.
Factor (exposure risk) |
HCV pos.
1
|
HCV neg. |
Fisher’s 2 | OR 3 | 95% CI 4 of OR | |||
---|---|---|---|---|---|---|---|---|
(Without substitution of missing values) | n | % | n | % | ||||
HIV5diagnosis |
|
|
|
|
|
|
|
|
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 |
|
|
|
|
|
|
|
|
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 |
|
|
|
|
|
|
|
|
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 |
||||
NIDU6of cocaine or amphetamines NIDU only |
|
|
|
|
|
|
|
|
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 |
1HCV pos./neg.: positive/negative for antibodies against hepatitis C virus; 2Fisher’s exact test; 3OR: odds ratio; 4CI: confidence interval; 5HIV: human immunodeficiency virus; 6NIDU: non-injection drug use; 7n.a.: not applicable (division by zero).