| Value | Category | Cases | |
|---|---|---|---|
| 0 | 13 |
26.5%
|
|
| 1 | 27 |
55.1%
|
|
| 2 | 8 |
16.3%
|
|
| 4 | 1 |
2%
|
|
| Sysmiss | 161 |