| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 63 |
5.3%
|
| 2 | Easy | 241 |
20.1%
|
| 3 | Difficult | 187 |
15.6%
|
| 4 | Very Difficult | 177 |
14.8%
|
| 7 | No contact | 528 |
44%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 4 |
0.3%
|