| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -77 | Does not apply | 1 |
0.5%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply (spontaneous) | 4 |
1.8%
|
| 1 | Yes | 100 |
45%
|
| 2 | No | 117 |
52.7%
|
| Sysmiss | 138 |