| Value | Category | Cases | |
|---|---|---|---|
| 1 | Bangkok and vicinity | 170 |
88.1%
|
| 2 | Northern Thailand | 7 |
3.6%
|
| 3 | Southern Thailand | 9 |
4.7%
|
| 4 | Northeastern Thailand | 4 |
2.1%
|
| 5 | Central Thailand | 3 |
1.6%
|
| Sysmiss | 9 |