Table 5 Characteristics of the questionnaire for detecting HCV antibody among Gorgan prison residents and new inmates
History of risk behaviors | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) |
|---|---|---|---|---|
Residents and new inmates (n = 1892) | ||||
Drug use, ever | 95 | 31 | 9 | 99 |
Injecting drug use, ever | 54 | 94 | 39 | 97 |
Shared injection equipment, ever | 34 | 97 | 47 | 95 |
HCV screening, ever | 43 | 69 | 9 | 94 |
Residents (n = 1482) | ||||
Drug use, ever | 96 | 30 | 10 | 99 |
Injecting drug use, ever | 58 | 94 | 43 | 97 |
Shared injection equipment, ever | 37 | 98 | 55 | 95 |
HCV screening, ever | 49 | 63 | 10 | 94 |
New inmates (n = 410) | ||||
Drug use, ever | 89 | 32 | 6 | 98 |
Imprisonment, ever | 89 | 32 | 6 | 98 |
Injecting drug use, ever | 26 | 94 | 18 | 96 |
Shared injection equipment, ever | 16 | 96 | 17 | 96 |
HCV screening, ever | 0 | 91 | 0 | 95 |