| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 (Don't know) | 20 |
14.4%
|
| -66 | -66 (refuse to answer) | 2 |
1.4%
|
| 0 | No | 94 |
67.6%
|
| 1 | Yes | 23 |
16.5%
|
| Sysmiss | 1240 |