Table 1. Interobserver agreement and agreement for the Paris classification among the endoscopists for categories type 0-I, -II or -III lesions.

	HR-WL image group			HR-WL + NBI image group
	Wkappa [95 %CI]	PA [95 %CI]	Wkappa [95 %CI]	PA [95 %CI]
All endoscopists (n = 8 observers)
Lesion:	0.65 [0.45,0.82]	0.91 [0.87,0.95]	0.70 [0.48,0.88]	0.93 [0.88,0.97]
I		0.75 [0.37,0.89]		0.70 [0.28,0.87]
II		0.95 [0.92,0.97]		0.96 [0.93,0.98]
III		0.48 [0.09,0.74]		0.74 [0.00,1.00]
Experts endoscopists (n = 4 observers)
Lesion:	0.72 [0.34,0.89]	0.92 [0.87,0.97]	0.72 [0.43,0.91]	0.94 [0.87,0.98]
I		0.84 [0.40,1.00]		0.70 [0.22,0.91]
II		0.95 [0.92,0.98]		0.96 [0.93,0.99]
III		0.47 [0.00,0.86]		0.78 [0.33,1.00]
Beginners endoscopists (n = 2 observers)
Lesion:	0.77 [0.34,1.00]	0.94 [0.87,1.00]	0.66 [0.27,0.94]	0.92 [0.85,0.98]
I		0.75 [0.00,1.00]		0.67 [0.00,1.00]
II		0.97 [0.92,1.00]		0.96 [0.91,0.99]
III		0.80 [0.00,1.00]		0.67 [0.00,1.00]
Trainees endoscopists (n = 2 observers)
Lesion:	0.33 [0.00,0.66]	0.85 [0.76,0.94]	0.60 [0.24,0.88]	0.89 [0.80,0.96]
I		0.50 [0.00,0.89]		0.61 [0.22,0.89]
II		0.92 [0.86,0.98]		0.93 [0.88,0.98]
III		0.00 [0.00,0.00]		0.67 [0.00,1.00]