| Value | Category | Cases | |
|---|---|---|---|
| -9 | missing | 0 |
0%
|
| -8 | dont know | 1 |
1.9%
|
| -7 | na | 0 |
0%
|
| 1 | yes | 11 |
20.4%
|
| 2 | no | 42 |
77.8%
|
| Sysmiss | 145 |