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Table 5 Characteristics of the questionnaire for detecting HCV antibody among Gorgan prison residents and new inmates

From: A simple risk-based strategy for hepatitis C virus screening among incarcerated people in a low- to middle-income setting

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
  1. PPV positive predictive value, NPV negative predictive value