| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 68 |
6.1%
|
| 2 | Easy | 170 |
15.2%
|
| 3 | Difficult | 51 |
4.6%
|
| 4 | Very Difficult | 19 |
1.7%
|
| 7 | Not Applicable | 808 |
72.1%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't Know | 3 |
0.3%
|