Table 3.

Scoring of all lesions according to VAS scores for white light and NBI

	Pathology: benign	Pathology: malignant
White light VAS [mean (SD)]	2.7 (2.5)	7.4 (1.6)
NBI VAS [mean (SD)]	3.2 (3.2)	8.4 (1.9)
p valuea	0.004 (Z = − 2.784, df NA)	< 0.001 (Z = − 4.195, df NA)

The VAS indicates whether a pathologically confirmed benign or malignant lesion is likely to be scored as benign (low VAS) or malignant (high VAS)

NBI narrow-band imaging, NA not applicable, SD standard deviation, VAS visual analog scale, df degree of freedom

^aWilcoxon signed rank test