| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | No difficulty | 4759 | 4756 |
63.4%
|
| 2 | Minor difficulty | 382 | 384 |
5.1%
|
| 3 | Big difficulty | 181 | 183 |
2.4%
|
| 8 | Not applicable | 2132 | 2136 |
28.5%
|
| 9 | Don’t know | 23 | 21 |
0.3%
|
| Sysmiss | 26 | 23 |