Sensitivity vs specificity table. Or, displayed in a contingency table: Test Positive: Test Negative: Row Total: Genuinely Positive: 144: 6: 150: Genuinely Negative: 12: 388: 400: Column Total: 156: ...

An ideal test rarely overlooks the thing you are looking for (i.e., it is sensitive) and rarely mistakes it for something else (i.e. it is specific). Therefore, when evaluating diagnostic tests, it is ...