Multicenter randomised controlled trial comparing the high definition white light endoscopy and the bright narrow band imaging for colon polyps

Table 5 Polyp characterisation based on Sano’s classification for polyps in the rectosigmoid region (5 mm or less in size)

	Pathology		Total
	Hyperplastic	Adenoma/cancer
Sano’s classification
I	146	10	156
II, IIIa, IIIb	7	130	137
Total	153	140

Sensitivity of predicting adenoma = 94.5% (89.1% to 97.3%); Specificity of predicting adenoma = 95.4% (90.6% to 97.8%); PPV of predicting adenoma = 94.8% (89.5% to 97.5%); NPV of predicting adenoma = 93.7% (87.7% to 96.9%).