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Test results in population with prevalence of 1%
| Diseased (APAP +) | Not Diseased (APAP-) | Totals | ||
|---|---|---|---|---|
| POCT ( +) | 5 (TP) | 317 (FP) | 322 | PPV: 2% |
| POCT (-) | 5 (FN) | 673 (TN) | 678 | NPV: 99% |
| 10 | 990 | 1000 | ||
| Sensitivity: 50% | Specificity: 68% | Accuracy: 68% |
The test characteristics of the POCT in diagnosing acute APAP toxicity when the disease prevalence is 1%. TP true positive, TN true negative, FP false positive, FN false negative, PPV positive predictive value, NPV negative predictive value
