Table 3.
Characteristics of 83 institutions
| Characteristic | No. of institutions |
|---|---|
| Region | |
| Seoul | 25 |
| Incheon–Gyeonggi-do | 20 |
| Daejeon–Chungcheong-do | 7 |
| Gwangju–Jeolla-do–Jeju-do | 8 |
| Busan–Ulsan–Gyeongsangnam-do | 11 |
| Daegu–Gyeongsangbuk-do | 8 |
| Gangwon-do | 4 |
| Tertiary hospital | |
| Yes | 42 |
| No | 41 |
| No. of hospital beds | |
| 2,000-2,499 | 1 |
| 1,500-1,999 | 3 |
| 1,100-1,499 | 4 |
| 900-1,099 | 7 |
| 700-899 | 27 |
| 500-699 | 30 |
| ≤ 499 | 11 |
| No. of radiation oncologists | |
| ≥ 6 | 6 |
| 4-5 | 10 |
| 3 | 21 |
| 2 | 25 |
| 1 | 21 |
| No. of RT cases for 12 years | |
| ≥ 1,000 | 6 |
| 500-999 | 0 |
| 300-499 | 7 |
| 200-299 | 10 |
| 100-199 | 22 |
| 50-99 | 12 |
| 10-49 | 21 |
| 1-9 | 5 |
| Total | 83 |
Four institutions without any adjuvant radiotherapy (RT) for rectal cancer during study period were excluded. The results were as of year 2016.