Table 3.
The average annual number of ESD by procedural volume.
| Average annual number of procedures | Total (n = 286) | Procedural volume of ESD | |||
|---|---|---|---|---|---|
| Very low (n = 131) | Low (n = 119) | High (n = 24) | Very high (n = 12) | ||
| Mean ± SD | 68.1 ± 133.1 | 4.1 ± 2.8 | 54.8 ± 43.6 | 249.5 ± 51.0 | 540.3 ± 258.6 |
| Median (IQR) | 13.3 (4.0, 64.5) | 3.3 (1.0, 6.2) | 39.7 (19.7, 74.0) | 238.4 (200.3, 293.3) | 421.7 (362.4, 664.9) |
| Min | 1.0 | 1.0 | 10.7 | 186.8 | 336.2 |
| Max | 1176.5 | 9.8 | 180.8 | 334.8 | 1176.5 |
ESD endoscopic submucosal dissection, SD standard deviation, IQR interquartile range.