| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 109 |
9.1%
|
| 2 | Easy | 220 |
18.3%
|
| 3 | Difficult | 97 |
8.1%
|
| 4 | Very Difficult | 56 |
4.7%
|
| 7 | No contact | 717 |
59.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|