| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 14 |
5%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Yes | 29 |
10.3%
|
| 2 | No | 238 |
84.7%
|
| Sysmiss | 1042 |