| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 174 |
7.3%
|
| 2 | Easy | 682 |
28.4%
|
| 3 | Difficult | 290 |
12.1%
|
| 4 | Very difficult | 94 |
3.9%
|
| 7 | Not applicable | 1159 |
48.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0%
|