| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 (Don't know) | 53 |
6.2%
|
| -66 | -66 (refuse to answer) | 1 |
0.1%
|
| 0 | No | 793 |
93%
|
| 1 | Yes | 6 |
0.7%
|
| Sysmiss | 526 |