| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 (Don't know) | 0 |
0%
|
| -66 | -66 (refuse to answer) | 0 |
0%
|
| 0 | No | 6 |
21.4%
|
| 1 | Yes | 22 |
78.6%
|
| Sysmiss | 1351 |