| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 114 |
4.8%
|
| 2 | Easy | 632 |
26.6%
|
| 3 | Difficult | 223 |
9.4%
|
| 4 | Very difficult | 53 |
2.2%
|
| 7 | Not applicable | 1355 |
57%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0%
|