| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 19 |
1.2%
|
| 2 | Easy | 41 |
2.6%
|
| 3 | Difficult | 56 |
3.5%
|
| 4 | Very Difficult | 44 |
2.8%
|
| 7 | No contact | 1438 |
89.9%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 2 |
0.1%
|