Diagnostic Metric

Formula

Value

True Positives (TP)

–

28

False Positives (FP)

–

6

True Negatives (TN)

–

14

False Negatives (FN)

–

0

Sensitivity

TP / (TP + FN)

28 / 28 = 100%

Specificity

TN / (TN + FP)

14 / 20 = 70%

Positive Predictive Value

TP / (TP + FP)

28 / 34 = 82.4%

Negative Predictive Value

TN / (TN + FN)

14 / 14 = 100%

Accuracy

(TP + TN) / Total

42 / 48 = 87.5%