| Value | Category | Cases | |
|---|---|---|---|
| 0 | 13 |
86.7%
|
|
| 1 | 1 |
6.7%
|
|
| 4 | 1 |
6.7%
|
|
| Sysmiss | don't know | 0 | |
| Sysmiss | refusal | 0 |