Table 2. Regional distribution of endoscopic submucosal dissection procedures.
| Hospital region | Total | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Seoul | 39,271 (41.2) | 489 (43.9) | 3,105 (44.2) | 3,344 (42.0) | 3,552 (43.0) | 3,462 (40.8) | 4,020 (41.8) | 4,368 (42.7) | 4,280 (41.4) | 4,419 (40.2) | 3,938 (39.3) | 4,294 (38.0) |
| Busan | 6,973 (7.3) | 110 (9.9) | 547 (7.8) | 563 (7.1) | 631 (7.6) | 616 (7.3) | 609 (6.3) | 633 (6.2) | 684 (6.6) | 834 (7.6) | 801 (8.0) | 945 (8.4) |
| Daegu | 6,832 (7.2) | 94 (8.4) | 630 (9.0) | 630 (7.9) | 582 (7.0) | 590 (7.0) | 687 (7.1) | 699 (6.8) | 669 (6.5) | 733 (6.7) | 693 (6.9) | 825 (7.3) |
| Incheon | 3,701 (3.9) | 31 (2.8) | 229 (3.3) | 238 (3.0) | 215 (2.6) | 306 (3.6) | 345 (3.6) | 417 (4.1) | 464 (4.5) | 503 (4.6) | 427 (4.3) | 526 (4.7) |
| Gwangju | 2,157 (2.3) | 23 (2.1) | 154 (2.2) | 233 (2.9) | 238 (2.9) | 233 (2.7) | 214 (2.2) | 235 (2.3) | 193 (1.9) | 212 (1.9) | 176 (1.8) | 246 (2.2) |
| Daejeon | 3,879 (4.1) | 34 (3.1) | 298 (4.2) | 402 (5.1) | 379 (4.6) | 374 (4.4) | 398 (4.1) | 429 (4.2) | 423 (4.1) | 400 (3.6) | 350 (3.5) | 392 (3.5) |
| Ulsan | 1,468 (1.5) | 19 (1.7) | 114 (1.6) | 135 (1.7) | 144 (1.7) | 136 (1.6) | 143 (1.5) | 131 (1.3) | 131 (1.3) | 174 (1.6) | 165 (1.6) | 176 (1.6) |
| Sejong | 26 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 5 (0.0) | 21 (0.2) |
| Gyeonggi Province | 15,606 (16.4) | 154 (13.8) | 997 (14.2) | 1,242 (15.6) | 1,348 (16.3) | 1,381 (16.3) | 1,618 (16.8) | 1,662 (16.3) | 1,762 (17.0) | 1,906 (17.3) | 1,629 (16.2) | 1,907 (16.9) |
| Gangwon State | 2,581 (2.7) | 29 (2.6) | 151 (2.2) | 235 (3.0) | 240 (2.9) | 239 (2.8) | 271 (2.8) | 268 (2.6) | 251 (2.4) | 254 (2.3) | 297 (3.0) | 346 (3.1) |
| Chungcheongbuk-do | 1,065 (1.1) | 13 (1.2) | 78 (1.1) | 85 (1.1) | 87 (1.1) | 106 (1.2) | 98 (1.0) | 128 (1.3) | 110 (1.1) | 122 (1.1) | 120 (1.2) | 118 (1.0) |
| Chungcheongnam-do | 2,030 (2.1) | 22 (2.0) | 127 (1.8) | 159 (2.0) | 143 (1.7) | 141 (1.7) | 191 (2.0) | 220 (2.2) | 245 (2.4) | 283 (2.6) | 244 (2.4) | 255 (2.3) |
| Jeollabuk-do | 2,372 (2.5) | 29 (2.6) | 176 (2.5) | 197 (2.5) | 221 (2.7) | 204 (2.4) | 222 (2.3) | 238 (2.3) | 238 (2.3) | 287 (2.6) | 282 (2.8) | 278 (2.5) |
| Jeollanam-do | 2,969 (3.1) | 23 (2.1) | 151 (2.2) | 165 (2.1) | 180 (2.2) | 302 (3.6) | 350 (3.6) | 330 (3.2) | 304 (2.9) | 370 (3.4) | 404 (4.0) | 390 (3.5) |
| Gyeongsangbuk-do | 357 (0.4) | 1 (0.1) | 30 (0.4) | 45 (0.6) | 35 (0.4) | 37 (0.4) | 37 (0.4) | 35 (0.3) | 49 (0.5) | 23 (0.2) | 30 (0.3) | 35 (0.3) |
| Gyeongsangnam-do | 3,620 (3.8) | 40 (3.6) | 200 (2.8) | 234 (2.9) | 245 (3.0) | 320 (3.8) | 381 (4.0) | 391 (3.8) | 475 (4.6) | 422 (3.8) | 423 (4.2) | 489 (4.3) |
| Jeju | 441 (0.5) | 2 (0.2) | 33 (0.5) | 53 (0.7) | 29 (0.4) | 40 (0.5) | 33 (0.3) | 42 (0.4) | 62 (0.6) | 60 (0.5) | 44 (0.4) | 43 (0.4) |
| Total | 95,348 (100.0) | 1,113 (100.0) | 7,020 (100.0) | 7,960 (100.0) | 8,269 (100.0) | 8,487 (100.0) | 9,617 (100.0) | 10,226 (100.0) | 10,340 (100.0) | 11,002 (100.0) | 10,028 (100.0) | 11,286 (100.0) |
The 2011 data included only cases from November to December. Values are presented as number (%).