Table 4. Depth of insertion of scope and reasons for failed cecal intubation in NSC patients.
| Depth of Insertion | Total | Reason for Failed Intubation (n) |
| Cecum | 115 | |
| Terminal ileum/neo TI | 57 | |
| Anastomosis | 1 | |
| Proximal ascending | 1 | Inadequate bowel prep |
| Hepatic flexure | 2 | Discomfort (1) Bowel redundancy (1) |
| Mid transverse | 3 | Inadequate bowel prep (2) Discomfort (1) |
| Splenic flexure | 3 | Bowel prep (1) Instrument inadequacy (2) Excess looping (1) |
| Proximal descending | 2 | Inadequate bowel prep (2) |
| Distal sigmoid | 5 | Discomfort (1) Limited by angulation/fixed sigmoid (3)Inadequate bowel prep (1) |
| Rectum | 3 | Inadequate bowel prep (2) Solid stool obstructing lumen (1) |
| 55 cm | 1 | Not recorded |
| Total completed | 173 | |
| Intubation rate | 89 % | |
| Adjusted intubation rate | 95 % | Allowing for inadequate bowel prep and instrument inadequacy |