| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 60 |
5%
|
| 2 | Easy | 138 |
11.5%
|
| 3 | Difficult | 135 |
11.3%
|
| 4 | Very Difficult | 101 |
8.4%
|
| 7 | No contact | 766 |
63.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|