| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 109 |
21.6%
|
| 2 | A little difficult | 129 |
25.6%
|
| 3 | Not difficult | 63 |
12.5%
|
| 7 | N/A | 203 |
40.3%
|
| 8 | DK | 0 |
0%
|
| Sysmiss | 8 |