| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 52 |
4.3%
|
| 2 | Easy | 160 |
13.3%
|
| 3 | Difficult | 186 |
15.5%
|
| 4 | Very Difficult | 165 |
13.8%
|
| 7 | Not applicable | 636 |
53%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|