| Value | Category | Cases | |
|---|---|---|---|
| -9 | missing | 0 |
0%
|
| -8 | dont know | 0 |
0%
|
| -7 | na | 0 |
0%
|
| 1 | yes | 9 |
29%
|
| 2 | no | 22 |
71%
|
| Sysmiss | 168 |