| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | No difficulty | 1441 | 1462 |
47.1%
|
| 2 | Minor difficulty | 94 | 76 |
2.4%
|
| 3 | Big difficulty | 312 | 259 |
8.3%
|
| 8 | Not applicable | 1215 | 1253 |
40.3%
|
| 9 | Don't know | 45 | 57 |
1.8%
|
| Sysmiss | 15 | 14 |