| Value | Category | Cases | |
|---|---|---|---|
| 0 | 31 |
2.2%
|
|
| 1 | 80 |
5.7%
|
|
| 2 | 161 |
11.5%
|
|
| 3 | 556 |
39.8%
|
|
| 4 | 568 |
40.7%
|
|
| Sysmiss | 174 |