Table 2. Performance characteristics for endoscopic prediction of histology.

	Sensitivity (95 % CI)	Specificity (95 % CI)	Positive predictive value (95 % CI)	Negative predictive value (95 % CI)	Accuracy (95 % CI)
Hyperplastic polyp (NICE 1/JNET 1)	87.18 % (77.68 – 93.68)	84.35 % (76.40 – 90.45)	79.07 % (71.02 – 85.34)	90.65 % (84.40 – 94.56)	85.49 % (79.72 – 90.14)
Sessile serrated polyp (NICE 1/JNET 1)	46.43 % (27.51 – 66.13 %)	55.76 % (47.83 – 63.47)	15.12 % (10.35 – 21.55)	85.98 % (80.89 – 89.88)	54.40 % (47.10 – 61.57)
Adenoma with low- or high-grade dysplasia (NICE 2)	92.31 % (84.79 – 96.85)	77.45 % (68.11 – 85.14)	78.50 % (71.72 – 84.02)	91.86 % (84.51 – 95.86)	84.46 % (78.56 – 89.26)
Adenoma with low-rade dysplasia (JNET 2A)	91.95 % (84.12 – 96.70)	74.53 % (65.14 – 82.49)	74.77 % (68.02 – 80.50)	91.86 % (84.61 – 95.86)	82.38 % (76.26 – 87.48)

NICE, NBI International Colorectal Endoscopic; JNET Japan NBI Expert Team.