| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 37 |
2.6%
|
| -7 | Does not apply (spontaneous) | 53 |
3.8%
|
| 1 | Yes | 380 |
26.9%
|
| 2 | No | 943 |
66.7%
|
| Sysmiss | 33 |