| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | No difficulty | 1652 | 1726 |
55.5%
|
| 2 | Minor difficulty | 28 | 30 |
1%
|
| 3 | Big difficulty | 104 | 108 |
3.5%
|
| 8 | Not applicable | 1310 | 1229 |
39.6%
|
| 9 | Don't know | 13 | 14 |
0.5%
|
| Sysmiss | 15 | 14 |