| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. none | 657 |
15.1%
|
| 1 | 1. low | 1302 |
29.9%
|
| 2 | 2. middle | 1732 |
39.7%
|
| 3 | 3. highest | 670 |
15.4%
|
| Sysmiss | 177 |