| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 97 |
8.1%
|
| 2 | Easy | 307 |
25.6%
|
| 3 | Difficult | 219 |
18.3%
|
| 4 | Very Difficult | 280 |
23.3%
|
| 7 | No contact | 295 |
24.6%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 2 |
0.2%
|