Table 3

Post-training detection rates based on colonoscopies performed by trained vs untrained endoscopists

2015201620172018Overall post-training
Trained endoscopists (n=2687)By untrained endoscopists (n=10 420)Trained endoscopists (n=2921)Untrained endoscopists (n=12 295)Trained endoscopists (n=2700)Untrained endoscopists (n=13 737)Trained endoscopists (n=1453)Untrained endoscopists (n=8515)Trained endoscopists (n=10 377)Untrained endoscopists (n=44 967)OR (95% CI)P value*
≥1 Proximal SP (=PSPDR), %12.50%10%13%10%15%10%16%10%14%10%1.49 (1.07 to 2.07) 0.018
 ≥1 SP28%25%28%25%27%23%2.70%21%28%24%1.27 (1.04 to 2.55) 0.021
 ≥1 HP23%20%21.50%19%20%17%21.50%16%22%18%1.30 (1.02 to 1.65) 0.035
 ≥1 SSL8.90%7.50%10%7.80%11%7.90%9.30%7.40%9.70%7.70%1.30 (1.02 to 1.66) 0.034
 ≥1 TSA0.70%1.00%0.90%1.00%0.70%0.90%0.60%0.60%0.70%0.90%0.89 (0.62 to 1.30)0.58
≥1 Adenoma (=ADR), %70%69%71%67%68.50%63%63%57%68.50%64%1.20 (1.04 to 1.38) 0.012
≥1 Advanced adenoma49%50%47%44%41%39%37%36%45%42%1.08 (0.95 to 1.22)0.23
  • Percentages ≥10% are rounded to the nearest integer.

  • *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.