| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 (Don't know) | 0 |
0%
|
| -66 | -66 (refuse to answer) | 0 |
0%
|
| 0 | No | 374 |
97.9%
|
| 1 | Yes | 8 |
2.1%
|
| Sysmiss | 997 |