| Value | Category | Cases | |
|---|---|---|---|
| 0 | 155 |
25.5%
|
|
| 1 | 417 |
68.6%
|
|
| 2 | 27 |
4.4%
|
|
| 3 | 4 |
0.7%
|
|
| 4 | 2 |
0.3%
|
|
| 5 | 3 |
0.5%
|
|
| Sysmiss | 37 |