Baseline detection rates based on 928 colonoscopies by trained endoscopists and 6069 colonoscopies by untrained endoscopists*
| Endoscopists in intervention arm (n=17) | Endoscopists in control arm (n=100) | P value† | |
| ≥1 Proximal SP (=PSPDR), % (95% CI) | 9.3% (7.4% to 11%) | 9.3% (8.6% to 10%) | 0.48 |
| ≥1 SP | 23% (20% to 26%) | 24% (23% to 25%) | 0.87 |
| ≥1 HP | 20% (17% to 22%) | 20% (19% to 21%) | 0.61 |
| ≥1 SSL | 5.9% (4.4% to 7.4%) | 5.4% (4.9% to 6.0%) | 0.72 |
| ≥1 TSA | 1.1% (0.4% to 1.7%) | 1.4% (1.1% to 1.8%) | 0.49 |
| ≥1 Adenoma (=ADR), % (95% CI) | 66% (63% to 70%) | 66% (65% to 68%) | 0.99 |
| ≥1 Advanced adenoma | 41% (38% to 44%) | 45% (44% to 47%) | 0.13 |
Percentages ≥10% are rounded to the nearest integer.
*Based on colonoscopies in 2014 prior to the first training session (trained endoscopists), or all colonoscopies in 2014 (untrained endoscopists).
†P values are based on mixed-effects logistic regression analyses, with fixed effects for training and adjusted with random intercepts for type of centre and endoscopist.
ADR, adenoma detection rate; HP, hyperplastic polyp; PSPDR, proximal serrated polyp detection rate; SP, serrated polyp; SSL, sessile serrated lesion; TSA, traditional serrated adenoma.