| Value | Category | Cases | |
|---|---|---|---|
| 1 | high | 104 |
40.5%
|
| 2 | average | 73 |
28.4%
|
| 3 | low | 54 |
21%
|
| 4 | none: not in operation | 26 |
10.1%
|
| Sysmiss | 1525 |