| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 7 |
0.6%
|
| 2 | Easy | 16 |
1.3%
|
| 3 | Difficult | 21 |
1.7%
|
| 4 | Very Difficult | 18 |
1.5%
|
| 7 | No contact | 1138 |
94.5%
|
| 8 | Refused | 4 |
0.3%
|
| 9 | Don't know | 0 |
0%
|