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

Table 2 Pathologic diagnosis in both bright narrow band imaging and high definition white light endoscopy n (%)

	bNBI (n = 495)	HD-WLE (n = 511)	P value
Adenomas	341	326	0.425
Subjects with adenomas2 (ADR)	185 (37.4)	201 (39.3)	0.523
Adenomas per adenoma carrier1	1.84	1.62	0.129
Size
Subjects with 0-5 mm adenomas2	149 (30.1)	162 (31.2)	0.583
Subjects with 6-9 mm adenomas2	52 (10.5)	52 (10.2)	0.864
Subjects with ≥ 10 mm adenomas2	31 (6.3)	31 (6.1)	0.897
Adenomas < 10 mm	306	290	0.283
Adenomas 0-5 mm	241	229	0.334
Adenomas 6-9 mm	65	61	0.896
Adenomas ≥ 10 mm	35	36	0.837
Location
Right-sided adenomas	157	155	0.400
Left-sided adenomas	168	159	0.797
Histopathology
Carcinomas	3	5	0.418
Tubular	315	304	0.343
Tubulovillious	10	12	0.689
Villious	2	0	NA
Adenomas with high grade dysplasia	6	7	0.992
Hyperplastic polyps	178	136	0.020
Hyperplastic polyps < 10 mm	176	135	0.020
SSA/Ps	13	7	0.257
Subjects with SSA/P, n (SSA/P-detection rate in %)	13 (2.6)	6 (1.2)	0.091
Inflammatory polyps	12	14	0.572
Indeterminate or non-significant	16	15	0.987
Not submitted for histologic examinations	13	31	0.010
Xanthoma	1	1	0.961

¹Mann-Whitney's U test used;

²χ² test or Fisher’s exact test used as appropriate. HD-WLE: High definition white light endoscopy; bNBI: Bright narrow band imaging.