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The definitions of sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy.
| Actual Positive (P) |
Actual Negative (N) |
||
|---|---|---|---|
| Predicted Positive |
True Positive (TP) |
False Positive (FP) |
PPV TP/(TP + FP) |
| Predicted Negative |
False Negative (FN) |
True Negative (TN) |
NPV TN/(TN + FN) |
|
Sensitivity TP/(TP + FN) |
Specificity TN/(TN + FP) |
||
|
Accuracy (TP + TN)/(P + N) | |||
