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Table 2 Statistical results of the 50 cases

From: Preliminary study for non – invasive optical detection of squamous and basal cell carcinomas

Statistic Item

Result

Notes

True positive (TP)

36

72% of all 50 cases

False positive (FP)

5

10% of all 50 cases

True negative (TN)

9

18% of all 50 cases

False negative (FN)

Zero

0.00% of all 50 cases

Specificity (TNR)

64.62%

= TN/(TN+FP)

Sensitivity (TPR)

100%

= TP/(TP+FN)

The positive prediction value (PPV)

the proportion of true positives out of all positive results

87.8%

= TP/(TP+FP)

The Negative prediction value (NPV)

the proportion of true positives out of all positive results

100%

= TN/(TN+FN)

Accuracy of our predictive measurements (ACC)

90%

ACC= (TP+TN)/(P+N)

Where; P = (TP+FN)

N = (FP+TN)