Table 2 Qualitative Diagnostic Characteristics of Methanol Content of Suspected Beverages Using Modified CA Method and Gold Standard Gas Chromatography (n = 1221, p < 0.001)
Gold standard | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) | Accuracy (95% CI) | Prevalence (95% CI) | |||
|---|---|---|---|---|---|---|---|---|---|
Test Results | positive | negative | |||||||
positive | 128 | 32 | 100 (97.16–100) | 97.07 (95.89–97.99) | 80 (73.98–84.91) | 100 (100) | 97.38 (96.32–98.2) | 10.48 (8.82–12.34) | |
negative | 0 | 1061 | |||||||
Safe drink | |||||||||
positive | 123 | 37 | 100 (97.05–100) | 96.63 (95.38–97.62) | 76.88 (70.78–82.02) | 100 (100) | 97.86 (95.85–98.2) | 10.07 (8.44–11.09) | |
negative | 0 | 1061 | |||||||