| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 (Don't know) | 20 |
14.4%
|
| -66 | -66 (refuse to answer) | 1 |
0.7%
|
| 0 | No | 116 |
83.5%
|
| 1 | Yes | 2 |
1.4%
|
| Sysmiss | 1240 |