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Effect of defined risk factors on the likelihood of testing positive for HCV antibodies by POCT.
| Risk factor | Present (N) | HCV+ | Risk (%) | Absent (N) | HCV+ | Risk (%) | Difference (%) | RR | P |
|---|---|---|---|---|---|---|---|---|---|
| IDU | 26 | 4 | 15.4 | 116 | 2 | 1.7 | 13.7 | 10.4 | 0.01 |
| Incarceration | 41 | 3 | 7.3 | 101 | 3 | 3.0 | 4.3 | 2.5 | 0.24 |
| Geographic | 63 | 1 | 1.6 | 81 | 5 | 6.2 | −4.6 | 0.3 | 0.17 |
| Transfusion | 28 | 1 | 3.6 | 116 | 5 | 4.3 | −0.7 | 0.8 | 0.66 |
RR = risk ratio.
