| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 1 |
0.3%
|
| -8 | Refused | 0 |
0%
|
| 1 | Yes | 92 |
30.1%
|
| 2 | No | 213 |
69.6%
|
| Sysmiss | 649 |