Narrow band imaging evaluation of duodenal villi in patients with and without celiac disease: A prospective study

Table 2 Agreement between narrow band imaging - based evaluation and histopathology scores

		Histopathology1		C-statistic
		Normal	Atrophy
Performing endoscopist	Normal	87	2	0.82
	Atrophy	7	16
Advanced endoscopist	Normal	94	8	0.83
	Atrophy	0	10
GI Fellow	Normal	76	0	0.86
	Atrophy	16	18

¹All discordant cases in which histopathology were rated as atrophy and narrow band imaging (NBI) findings were rated as normal were cases of partial villous atrophy (i.e., not complete villous atrophy); there were no cases of histopathologically-proven complete villous atrophy which were rated as normal by NBI.