| Value | Category | Cases | |
|---|---|---|---|
| 0 | 577 |
69.4%
|
|
| 1 | 232 |
27.9%
|
|
| 2 | 21 |
2.5%
|
|
| 3 | 1 |
0.1%
|
|
| Sysmiss | 1864 |