Efficacy of cap-assisted colonoscopy according to lesion location and endoscopist training level

Table 6 Polyp detection rate, adenoma detection rate, and the number of polyps and adenomas of right-side colon based on age n (%)

Right-side colon
Age (yr)	Total	CAC	SC	P value
20-49	308	147	161
Polyps per patient	0.25 ± 0.82	0.35 ± 1.09	0.15 ± 0.45	0.030
PDR	49 (15.9)	30 (20.4)	19 (11.8)	0.039
Adenomas per patient	0.13 ± 0.61	0.20 ± 0.83	0.06 ± 0.25	0.033
ADR	28 (9.1)	20 (13.6)	8 (5.0)	0.008
50-65	544	293	251
Polyps per patient	0.59 ± 1.00	0.68 ± 1.13	0.49 ± 0.82	0.025
PDR	194 (35.7)	110 (37.5)	84 (33.5)	0.322
Adenomas per patient	0.41 ± 0.86	0.50 ± 1.00	0.31 ± 0.66	0.009
ADR	138 (25.4)	82 (28.0)	56 (22.3)	0.129
66-75	154	68	86
Polyps per patient	0.91 ± 1.31	1.21 ± 1.38	0.67 ± 1.21	0.012
PDR	86 (55.8)	38 (55.9)	30 (34.9)	0.009
Adenomas per patient	0.62 ± 1.04	0.81 ± 0.99	0.47 ± 1.07	0.043
ADR	54 (35.1)	34 (50.0)	20 (23.3)	0.001
≥ 76	17	7	10
Polyps per patient	0.59 ± 1.00	0.86 ± 1.06	0.40 ± 0.96	0.167
PDR	6 (35.3)	4 (57.1)	2 (20.0)	0.162
Adenomas per patient	0.41 ± 0.71	0.57 ± 0.78	0.30 ± 0.67	0.362
ADR	5 (29.4)	3 (42.9)	2 (20.0)	0.593

CAC: Cap-assisted colonoscopy; SC: Standard colonoscopy; PDR: Polyp detection rate; ADR: Adenoma detection rate.