| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 (Don't know) | 4 |
0.6%
|
| -66 | -66 (refuse to answer) | 26 |
3.6%
|
| 0 | No | 532 |
74.2%
|
| 1 | Yes | 155 |
21.6%
|
| Sysmiss | 662 |