Table 1 Definition of accuracy, sensitivity, specificity, PPV, and NPV in the per-image analysis (per-lesion analysis)
From: Convolutional neural network-based system for endocytoscopic diagnosis of early gastric cancer
Parameter | Definition |
|---|---|
Accuracy | Correctly diagnosed images (lesions) by the CNN or endoscopists/total images (lesions) |
Sensitivity | Correctly diagnosed EGC images (lesions) by the CNN or endoscopists /total EGC images (lesions) |
Specificity | Correctly diagnosed NGM images (lesions) by the CNN or endoscopists /total NGM images (lesions) |
PPV | Correctly diagnosed images (lesions) by the CNN or endoscopists/total images (lesions) diagnosed as EGC by the CNN or endoscopists |
NPV | Correctly diagnosed EGC images (lesions) by the CNN or endoscopists /total images (lesions) diagnosed as NGM by the CNN or endoscopists |