| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 (Don't know) | 0 |
0%
|
| -66 | -66 (refuse to answer) | 1 |
0.2%
|
| 0 | No | 507 |
98.4%
|
| 1 | Yes | 7 |
1.4%
|
| Sysmiss | 864 |