| Value | Category | Cases | |
|---|---|---|---|
| 1 | high | 1295 |
27.7%
|
| 2 | normal | 1849 |
39.5%
|
| 3 | low | 1097 |
23.4%
|
| 4 | none, not in operation | 438 |
9.4%
|
| Sysmiss | 5430 |