| Value | Category | Cases | |
|---|---|---|---|
| 0 | 29 |
4.2%
|
|
| 1 | 40 |
5.7%
|
|
| 2 | 52 |
7.5%
|
|
| 3 | 266 |
38.2%
|
|
| 4 | 310 |
44.5%
|
|
| Sysmiss | 873 |