| Value | Category | Cases | |
|---|---|---|---|
| -999 | Refuse to answer | 3 |
0.5%
|
| -998 | Don't know | 1 |
0.2%
|
| 0 | No | 65 |
10.2%
|
| 1 | Yes | 569 |
89.2%
|
| Sysmiss | 1543 |