| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 13 |
1.2%
|
| -7 | DOES NOT APPLY | 0 |
0%
|
| 1 | Yes | 500 |
46.6%
|
| 2 | No | 561 |
52.2%
|
| Sysmiss | 4278 |