| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 72 |
6%
|
| 2 | Easy | 178 |
14.8%
|
| 3 | Difficult | 75 |
6.3%
|
| 4 | Very Difficult | 26 |
2.2%
|
| 7 | No contact | 847 |
70.6%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don't know | 1 |
0.1%
|