Table 3.
Unstratified and Stratified Incidence Rate Ratio by Screening Rate for HCV Reinfection vs No Reinfection as a Function of Positive G-C, Syphilis, or UDS Results in the Pre-SVR Period
| Unstratified IRR (95% CI) | P Value | Stratified IRR (95% CI) | Screening Rate Cutoff for Stratification/PYFU | P Value | |
|---|---|---|---|---|---|
| G-C (n = 120) | 21.41 (1.94–149.39) | .01 | 14.23 (1.11–121.88) | 3.69 | .04 |
| Syphilis (n = 122) | 26.16 (0–181.43) | 1.0 | 52.27 (0–486.70) | 4.78 | 1.0 |
| UDS (n = 79) | 1.22 (0–8.49) | 1.0 | 0.60 (0–5.61) | 1.30 | .68 |
Abbreviations: G-C, gonorrhea–chlamydia; HCV, hepatitis C virus; IRR, incidence rate ratio; SVR, sustained virologic response; UDS, urine drug screen.