| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 23 |
3.3%
|
| 1 | 1 | 135 |
19.5%
|
| 2 | 2 | 224 |
32.3%
|
| 3 | 3 | 224 |
32.3%
|
| 4 | 4 | 87 |
12.6%
|
| Sysmiss | 2948 |