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

Table 1 Baseline characteristics of enrolled patients n (%)

Characteristics	Total	CAC	SC	P value
Patients	1023	515	508
mean age ± SD	54.75 ± 10.52	55.06 ± 10.29	54.44 ± 10.74	0.342
Gender				0.650
Male	549 (53.7)	280 (54.4)	269 (53.0)
Female	474 (46.3)	235 (45.6)	239 (47.0)
Withdrawal time of total colonoscopies (min)	13.83 ± 7.50	14.67 ± 7.70	12.97 ± 7.20	< 0.001
No. of patients of non therapeutic colonoscopies	566	265	301
Withdrawal time of non therapeutic colonoscopies (min)	10.50 ± 3.75	10.68 ± 3.09	10.33 ± 4.24	0.272
Bowel preparation(Aronchick scale)				0.244
Excellent	38 (3.7)	19 (3.7)	19 (3.7)
Good	646 (63.1)	316 (61.4)	330 (65.0)
Fair	339 (33.1)	180 (35.0)	159 (31.3)

CAC: Cap-assisted colonoscopy; SC: Standard colonoscopy.