| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | No difficulty | 1921 | 1842 |
59.3%
|
| 2 | Minor difficulty | 129 | 128 |
4.1%
|
| 3 | Big difficulty | 80 | 62 |
2%
|
| 8 | Not applicable | 949 | 1047 |
33.7%
|
| 9 | Don't know | 28 | 28 |
0.9%
|
| Sysmiss | 15 | 14 |