Endoscopic procedure experience by stage of training and year of survey
| 2014 survey Median (IQR) | 2018 survey Median (IQR) | |||||
| Grade | OGD | Sigmoidoscopy | Colonoscopy | OGD | Sigmoidoscopy | Colonoscopy |
| ST3 | 150 (101–199) | 20 (5–30) | 5 (1–21) | 130 (90–208) | 6 (1–20) | 6 (0–30) |
| ST4 | 350 (260–430 | 50 (35–80) | 80 (50–140) | 300 (250–356) | 36 (20–57) | 90 (50–131) |
| ST5 | 500 (360–665) | 100 (50–191) | 190 (130–300) | 450 (350–600) | 87 (50–101) | 150 (100–220) |
| ST6 | 646 (510–984) | 161 (95–300) | 290 (200–400) | 500 (400–800) | 133 (76–200) | 250 (200–337) |
| ST7 | 1000 (825–1500) | 275 (140–500) | 500 (346–688) | 670 (500–1250 | 200 (100–300) | 400 (300–600) |
OGD, oesophagogastroduodenoscopy; ST, specialty training.