| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | No difficulty | 1774 | 1719 |
55.3%
|
| 2 | Minor difficulty | 271 | 320 |
10.3%
|
| 3 | Big difficulty | 270 | 288 |
9.3%
|
| 8 | Not applicable | 784 | 773 |
24.9%
|
| 9 | Don't know | 8 | 8 |
0.3%
|
| Sysmiss | 15 | 14 |