| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult | 375 |
39.8%
|
| 2 | A little difficult | 241 |
25.6%
|
| 3 | Not difficult | 263 |
27.9%
|
| 7 | Missing | 28 |
3%
|
| 9 | Not Applicable | 36 |
3.8%
|