| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 75 |
6.2%
|
| 2 | Easy | 282 |
23.4%
|
| 3 | Difficult | 184 |
15.3%
|
| 4 | Very Difficult | 128 |
10.6%
|
| 7 | No contact | 527 |
43.8%
|
| 8 | Refused | 2 |
0.2%
|
| 9 | Don't know | 6 |
0.5%
|