| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 (Don't know) | 1 |
0.4%
|
| -66 | -66 (refuse to answer) | 4 |
1.5%
|
| 0 | No | 173 |
63.6%
|
| 1 | Yes | 94 |
34.6%
|
| Sysmiss | 1107 |