| Value | Category | Cases | |
|---|---|---|---|
| 1 | high | 48 |
18.7%
|
| 2 | average | 87 |
33.9%
|
| 3 | low | 82 |
31.9%
|
| 4 | none: not in operation | 40 |
15.6%
|
| Sysmiss | 1525 |