| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 |
0.7%
|
|
| 0 | 21 |
13.7%
|
|
| 1 | 52 |
34%
|
|
| 2 | 56 |
36.6%
|
|
| 3 | 22 |
14.4%
|
|
| 4 | 1 |
0.7%
|
|
| Sysmiss | 423 |