| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 167 |
13.9%
|
| 2 | Easy | 317 |
26.4%
|
| 3 | Difficult | 264 |
22%
|
| 4 | Very Difficult | 173 |
14.4%
|
| 7 | No contact | 277 |
23.1%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 1 |
0.1%
|