| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | very difficult | 1041 | 1052 |
35%
|
| 2 | difficult | 1022 | 1004 |
33.4%
|
| 3 | simple | 634 | 648 |
21.6%
|
| 4 | very simple | 155 | 168 |
5.6%
|
| 9 | DK | 153 | 133 |
4.4%
|