| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 48 |
4%
|
| 2 | Easy | 146 |
12.2%
|
| 3 | Difficult | 59 |
4.9%
|
| 4 | Very difficult | 46 |
3.8%
|
| 7 | Not applicable | 900 |
75%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|