Results of mixed effects model using colonoscopy completion as the outcome measure
| Trainee and training factors | No of trainees (%) | OR (95% CIs) | p Value |
|---|---|---|---|
| No of procedures | |||
| <50 | 65 (22) | Reference | |
| 50–99 | 77 (26) | 1.80 (1.50 to 2.20) | <0.01 |
| 100–149 | 55 (19) | 4.20 (3.80 to 4.70) | <0.01 |
| 150–199 | 46 (15) | 4.50 (4.0 to 5.00) | <0.01 |
| 200–249 | 28 (9.5) | 4.60 (4.00 to 5.10) | <0.01 |
| 250–299 | 16 (5.5) | 7.70 (6.90 to 8.40) | <0.01 |
| 300–349 | 9 (3) | 6.40 (5.50 to 7.20) | <0.01 |
| Adjusted intensity | 297 | 1.10 (1.00 to 1.10) | 0.034 |
| No of trainers | 297 | 0.99 (0.97 to 1.00) | 0.68 |
| Trainee specialty | |||
| Gastroenterologist | 167 (56) | Reference | |
| Gastrointestinal surgeon | 97 (33) | 1.60 (1.30 to 2.00) | 0.01 |
| Nurse endoscopist | 32 (11) | 1.30 (0.70 to 1.90) | 0.40 |
| General practitioner | 1 (0.34) | 1.20 (−1.10 to 3.40) | 0.89 |
| Breaks in training >6 months | |||
| No | 228 (77) | Reference | |
| Yes | 69 (23) | 1.10 (0.78 to 1.40) | 0.56 |
| Flexible sigmoidoscopy experience >100 | |||
| No | 249 (84) | Reference | |
| Yes | 24 (8.1) | 2.40 (1.80 to 3.00) | <0.01 |
| Unknown | 24 (8.1) | 1.00 (0.48 to 1.50) | 0.98 |
| OGD experience >100 | |||
| No | 187 (63) | Reference | |
| Yes | 69 (23) | 1.20 (0.84 to 1.60) | 0.30 |
| Unknown | 41 (14) | 1.40 (0.94 to 1.90) | 0.98 |
| Completed colonoscopy course | |||
| No | 100 (34) | Reference | |
| Yes | 197 (66) | 0.88 (0.58 to 1.20) | 0.38 |
| Baseline level of experience | |||
| None | 166 (56) | Reference | |
| 1–20 | 61 (21) | 1.30 (0.85 to 1.70) | 0.27 |
| 21–50 | 70 (24) | 1.60 (1.20 to 2.10) | 0.038 |
| Source of baseline data | |||
| JAG e-portfolio | 92 (31) | Reference | |
| Survey | 205 (69) | 0.85 (0.42 to 1.30) | 0.45 |
| Patient factors | No of colonoscopies (%) | OR (95% CIs) | p Value |
| Age (years) | |||
| <40 | 4 563 (12) | Reference | |
| 40–64 | 17 934 (49) | 1.10 (1.00 to 1.20) | 0.063 |
| >65 | 14 233 (39) | 0.85 (0.77 to 0.94) | <0.01 |
| Gender | |||
| Male | 19 450 (53) | Reference | |
| Female | 17 280 (47) | 0.64 (0.59 to 0.69) | <0.01 |
| Diagnosis at colonoscopy (reference: not present) | |||
| +Diagnosis available | 30 458 (83) | 1.80 (1.70 to 1.90) | <0.01 |
| +Colorectal cancer | 688 (2.3) | 0.50 (0.33 to 0.68) | <0.01 |
| +Polyps | 8 126 (27) | 1.10 (1.00 to 1.10) | 0.072 |
| +IBD | 3 088 (10) | 0.98 (0.89 to 1.10) | 0.75 |
| +Diverticular disease | 5 455 (18) | 0.86 (0.79 to 0.94) | <0.01 |
| +Stricture | 495 (1.6) | 0.16 (-0.06 to 0.38) | <0.01 |
| Random effects | SD | ||
| Trainee | 1.00 | ||
| Hospital | 0.88 | ||
Percentages, ORs and p values given to 2 significant figures.
JAG, Joint Advisory Group; OGD, oesophagogastric duodenoscopy.