| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 37 |
1.5%
|
| 2 | Easy | 121 |
5%
|
| 3 | Difficult | 145 |
6%
|
| 4 | Very difficult | 148 |
6.2%
|
| 7 | Not applicable | 1948 |
81.2%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0%
|