| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 23 |
1%
|
| 2 | Easy | 103 |
4.3%
|
| 3 | Difficult | 102 |
4.3%
|
| 4 | Very difficult | 49 |
2.1%
|
| 7 | Not applicable | 2100 |
88.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0%
|