| Value | Category | Cases | |
|---|---|---|---|
| -999 | Refuse to answer | 10 |
1.5%
|
| -998 | Don't know | 4 |
0.6%
|
| 0 | No | 77 |
11.4%
|
| 1 | Yes | 587 |
86.6%
|
| Sysmiss | 1503 |