| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 (Don't know) | 1 |
0.2%
|
| -66 | -66 (refuse to answer) | 30 |
4.9%
|
| 0 | No | 440 |
71.2%
|
| 1 | Yes | 147 |
23.8%
|
| Sysmiss | 761 |