| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 187 |
19.8%
|
| 2 | A little difficult | 196 |
20.8%
|
| 3 | Not difficult | 294 |
31.2%
|
| 7 | Missing | 251 |
26.6%
|
| 9 | Not Applicable | 15 |
1.6%
|