Table 2.

Comparison of “high-risk” and “low-risk” lesions

	AFV		Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)
	Loss (AFL)	Retained (AFR)
High risk (moderate or severe dysplasia or carcinoma in situ)	True positive 19	False negative 2	90.47	44.44	79.16	66.67
Low risk (no or mild dysplasia)	False positive 5	True negative 4

AFV: Autofluorescence visualization examination, AFL: Autofluorescence visualization loss, AFR: Autofluorescence visualization retained, PPV: Positive predictive value, NPV: Negative predictive value