| Value | Category | Cases | |
|---|---|---|---|
| 0 | 279 |
79.3%
|
|
| 1 | 40 |
11.4%
|
|
| 2 | 22 |
6.3%
|
|
| 3 | 6 |
1.7%
|
|
| 4 | 1 |
0.3%
|
|
| 5 | 4 |
1.1%
|
|
| Sysmiss | 18 |