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government organization in the United States.
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Formula for Sensitivity, Specificity, Positive Predictive Value (PPV), Negative Predictive Value (NPV) Calculation
| Positive test result | True Positive (TP) | False Positive (FP) | PPV: TP/(TP+FP) |
| Negative test result | False Negative (FN) | True Negative (TN) | NPV: TN/(TN+FN) |
| Sensitivity: TP/(TP+FN) | Specificity: TN/(FP+TN) |
