| Value | Category | Cases | |
|---|---|---|---|
| -99 | 18 |
9.2%
|
|
| 0 | 43 |
22.1%
|
|
| 1 | 70 |
35.9%
|
|
| 2 | 56 |
28.7%
|
|
| 3 | 5 |
2.6%
|
|
| 4 | 3 |
1.5%
|
|
| Sysmiss | 605 |