| Value | Category | Cases | |
|---|---|---|---|
| 1 | high | 45 |
17.5%
|
| 2 | average | 136 |
52.9%
|
| 3 | low | 54 |
21%
|
| 4 | none: not in operation | 22 |
8.6%
|
| Sysmiss | 1525 |