| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 81 |
6.8%
|
| 2 | Easy | 177 |
14.8%
|
| 3 | Difficult | 75 |
6.3%
|
| 4 | Very Difficult | 44 |
3.7%
|
| 7 | No contact | 820 |
68.3%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 3 |
0.3%
|