Table 1.
Reasons for inadequate flexible sigmoidoscopy (FSG) screening by depth of insertion a
| Baseline FSG b | Repeat FSG in 3–5 years c | |||
|---|---|---|---|---|
| Reason | Depth of insertion, n (%) | Depth of insertion, n (%) | ||
| < 50 cm | ≥ 50 cm | < 50 cm | ≥ 50 cm | |
| All | 6,496 (100) | 567 (100) | 4509 (100) | 506 (100) |
| Severe ulcerative colitis | 1 (0.0) | 0 (0.0) | 1 (0.0) | 0 (0.0) |
| Participant discomfort | 4889 (75.3) | 35 (6.2) | 3243 (71.9) | 32 (6.3) |
| Severe diverticulosis with unclear lumen | 534 (8.2) | 17 (3.0) | 317 (7.0) | 11 (2.2) |
| Equipment malfunction | 20 (0.3) | 4 (0.7) | 11 (0.2) | 3 (0.6) |
| Poor bowel preparation | 1485 (22.9) | 500 (88.2) | 1290 (28.6) | 469 (92.7) |
| Participant refusal | 337 (5.2) | 2 (0.4) | 232 (5.1) | 1 (0.2) |
| Vasovagal response | 99 (1.5) | 3 (0.5) | 21 (0.5) | 3 (0.6) |
| Palpitations with tachycardia | 3 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0). |
a
Reasons for inadequate examinations were not mutually exclusive
b
At baseline, depth of insertion was missing for 21 participants. The specific reason for inadequate FSG designation for 6 participants with depth of insertion of 50 cm or more was missing.
c
At repeat FSG, depth of insertion of the flexible sigmoidoscope was missing for 6 participants