| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 14 |
1.1%
|
| -7 | Does not apply (spontaneous) | 15 |
1.2%
|
| 1 | Yes | 485 |
39.3%
|
| 2 | No | 720 |
58.3%
|
| Sysmiss | 5 |