| Value | Category | Cases | |
|---|---|---|---|
| 1 | high | 86 |
33.5%
|
| 2 | average | 99 |
38.5%
|
| 3 | low | 45 |
17.5%
|
| 4 | none: not in operation | 27 |
10.5%
|
| Sysmiss | 1525 |