| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 20 |
1.7%
|
| 2 | Easy | 46 |
3.8%
|
| 3 | Difficult | 47 |
3.9%
|
| 4 | Very Difficult | 94 |
7.8%
|
| 7 | No contact | 992 |
82.7%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 1 |
0.1%
|