| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 68 |
5.7%
|
| 2 | Easy | 144 |
12%
|
| 3 | Difficult | 65 |
5.4%
|
| 4 | Very Difficult | 55 |
4.6%
|
| 7 | No contact | 866 |
72.2%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 2 |
0.2%
|