| Value | Category | Cases | |
|---|---|---|---|
| -9 | Dont know | 0 |
0%
|
| -8 | Refuse | 1 |
0.2%
|
| 1 | Yes | 13 |
2.7%
|
| 2 | No | 473 |
97.1%
|
| Sysmiss | 11402 |