| Value | Category | Cases | |
|---|---|---|---|
| 0 | 168 |
68%
|
|
| 1 | 67 |
27.1%
|
|
| 2 | 11 |
4.5%
|
|
| 3 | 1 |
0.4%
|
|
| Sysmiss | 644 |