Differences between HDC and SVC
| Variable | HDC | SVC | p Value |
| Comfort score 1 or 2 | 665 (73.7%) | 2255 (78.1%) | 0.01 |
| Comfort score 3, 4 or 5 | 237 (26.3%) | 663 (21.9%) | |
| Midazolam mg (mean) | 3.57 | 3.37 | <0.001 |
| Fentanyl μg (mean) | 62.83 | 61.13 | 0.04 |
| Caecal intubation rate | 864 (95.79%) | 2784 (96.4%) | 0.42 |
| Polyp detection rate | 299 (33%) | 1096 (38%) | 0.01 |