| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | No difficulty | 5575 | 5552 |
74%
|
| 2 | Minor difficulty | 612 | 635 |
8.5%
|
| 3 | Big difficulty | 325 | 339 |
4.5%
|
| 8 | Not applicable | 930 | 920 |
12.3%
|
| 9 | Don’t know | 35 | 34 |
0.5%
|
| Sysmiss | 26 | 23 |