Table 1.
Baseline characteristics of all patients n (%)
| CAC (n = 200) | SC (n = 200) | P value | |
| Sex (male) | 102 (51.0) | 88 (44.0) | 0.16 |
| Age (yr) (mean ± SD) | 53.8 ± 15.1 | 53.6 ± 14.8 | 0.89 |
| Previous difficult colonoscopy | 19 (9.5) | 15 (7.5) | 0.65 |
| Known diverticular disease | 8 (0.04) | 11 (0.06) | 0.74 |
| Previous pelvic surgery | 25 (12.5) | 26 (13.0) | 0.80 |
| Gastroscopy at the same time | 74 (37.0) | 89 (44.5) | 0.17 |
| Indications | |||
| CRC screening | 38 (19.0) | 35 (17.5) | |
| Rectal bleeding | 37 (18.5) | 32 (16.0) | |
| Abdominal pain | 32 (16.0) | 33 (16.5) | |
| Polyp follow up | 30 (15.0) | 27 (13.5) | |
| Change in bowel habit | 18 (9.0) | 28 (14.0) | |
| Others | 45 (22.5) | 45 (22.5) | 0.58 |
| Endoscopist | |||
| Specialist | 41 (20.5) | 49 (24.5) | |
| Trainee | 159 (79.5) | 151 (75.5) | 0.34 |
| Bowel preparation | |||
| Good | 107 (54.0) | 130 (65.7) | |
| Satisfactory | 71 (35.9) | 53 (26.8) | |
| Poor | 20 (10.1) | 15 (7.6) | 0.10 |
| Scopes used | |||
| P160/P180 | 137 (66.5) | 143 (70.5) | |
| A160/A180 | 63 (32.0) | 57 (28.5) | 0.61 |
CAC: Cap-assisted colonoscopy; SC: Standard colonoscopy; CRC: Colorectal cancer.