| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 24 |
2%
|
| 2 | Easy | 60 |
5%
|
| 3 | Difficult | 50 |
4.2%
|
| 4 | Very Difficult | 83 |
6.9%
|
| 7 | No contact | 983 |
81.9%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|