| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 4 |
1%
|
| -8 | Refused | 0 |
0%
|
| 1 | Yes | 33 |
8.5%
|
| 2 | No | 353 |
90.5%
|
| Sysmiss | 1605 |