| Value | Category | Cases | |
|---|---|---|---|
| 0 | 631 |
90.3%
|
|
| 1 | 50 |
7.2%
|
|
| 2 | 16 |
2.3%
|
|
| 3 | 2 |
0.3%
|
|
| Sysmiss | 871 |