| Value | Category | Cases | |
|---|---|---|---|
| -1000 | Does not apply (SPONTANEOUS) | 58 |
12.3%
|
| -9 | Don’t know (SPONTANEOUS) | 16 |
3.4%
|
| 1 | Not a challenge | 116 |
24.5%
|
| 2 | Minor challenge | 36 |
7.6%
|
| 3 | Moderate challenge | 77 |
16.3%
|
| 4 | Major challenge | 170 |
35.9%
|
| Sysmiss | 198 |