Table 1.
Characteristics of endoscopists and colonoscopies
| Included endoscopists (n=117) | |||
| Overall (n=117) | Intervention arm (n=17) | Control arm (n=100) | |
| Type of centre of endoscopist, n (%) | |||
| Academic hospital | 6 (5.1%) | 3 (18%) | 3 (3.0%) |
| General hospital | 101 (86%) | 10 (59%) | 91 (91%) |
| Private clinic | 10 (8.5%) | 4 (23.5%) | 6 (6.0%) |
| Pretraining colonoscopies* (n=6997) Characteristics of scoped patients | ||||
| Overall (n=6997) | Intervention arm (n=928) | Control arm (n=6069) | P value | |
| Age, mean (SD) | 71 (SD 5.1) | 72 (SD 4.7) | 71 (SD 5.1) | <0.001 |
| Male gender, n (%) | 4119 (59%) | 563 (61%) | 3556 (59%) | 0.24 |
| Type of centre, n (%) | <0.001 | |||
| Academic hospital | 940 (13%) | 226 (24%) | 714 (12%) | |
| General hospital | 5357 (77%) | 574 (62%) | 4783 (79%) | |
| Private clinic | 700 (10%) | 128 (14%) | 572 (9.4%) | |
| Quality parameters, n (%) | ||||
| Caecal intubation, n (%) | 6642 (95%) | 882 (95%) | 5760 (95%) | 1 |
| Inspection time, median (IQR) | 14 (9–21) | 16 (10–26) | 13 (9–20) | <0.001 |
| Inspection time ≥6 min | 6541 (94%) | 912 (98%) | 5629 (93%) | <0.001 |
| BBPS ≥2 in all segments | 6727 (96%) | 896 (96%) | 5831 (96%) | 0.94 |
| Post-training colonoscopies* (n=55 344) Characteristics of scoped patients | ||||
| Overall (n=55 344) | Intervention arm (n=10 377) | Control arm (n=44 967) | P value | |
| Age, mean (SD) | 66 (SD 5.3) | 66 (SD 5.1) | 66 (SD 5.4) | 0.005 |
| Male gender, n (%) | 32 587 (59%) | 6053 (58%) | 26 534 (59%) | 0.21 |
| Type of centre, n (%) | <0.001 | |||
| Academic hospital | 3516 (6.4%) | 2057 (20%) | 1459 (3.2%) | |
| General hospital | 42 705 (79%) | 5993 (58%) | 37 712 (84%) | |
| Private clinic | 8123 (15%) | 2327 (22%) | 5796 (13%) | |
| Year of colonoscopy, n (%) | ||||
| 2014 | 616 (1.1%) | 616 (5.9%)* | Not applicable* | |
| 2015 | 13 107 (24%) | 2687 (26%) | 10 420 (23%) | |
| 2016 | 15 216 (27.5%) | 2921 (28%) | 12 295 (27%) | |
| 2017 | 16 437 (30%) | 2700 (26%) | 13 737 (30.5%) | |
| 2018 | 9968 (18%) | 1453 (14%) | 8515 (19%) | <0.001 |
| Quality parameters, n (%) | ||||
| Caecal intubation, n (%) | 53 844 (97%) | 10 061 (97%) | 43 783 (97%) | 0.02 |
| Inspection time, median (IQR) | 14 (10–21) | 17 (12–26) | 13 (9–20) | <0.001 |
| Inspection time ≥6 min | 53 973 (97.5%) | 10 276 (99%) | 43 697 (97%) | <0.001 |
| BBPS ≥2 in all segments | 52 896 (96%) | 9818 (95%) | 43 078 (96%) | <0.001 |
Percentages ≥10% are rounded to the nearest integer.
*Pretraining refers to baseline colonoscopies performed in 2014 prior to the first training session (trained endoscopists), or all colonoscopies in 2014 (untrained endoscopists). Post-training refers to all colonoscopies after the first training (trained endoscopists), or all colonoscopies from 2015 onwards (untrained endoscopists).
BBPS, Boston Bowel Preparation Score.