| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 0 |
0%
|
| -7 | not applicable | 0 |
0%
|
| 1 | yes | 75 |
71.4%
|
| 2 | no | 30 |
28.6%
|
| Sysmiss | 981 |