| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 7 |
13.7%
|
| 0 | 39 |
76.5%
|
|
| 5 | 1 |
2%
|
|
| 10 | 2 |
3.9%
|
|
| 45 | 1 |
2%
|
|
| 70 | 1 |
2%
|
|
| Sysmiss | 99 |