| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 113 |
9.4%
|
| 2 | Easy | 217 |
18.1%
|
| 3 | Difficult | 44 |
3.7%
|
| 4 | Very Difficult | 34 |
2.8%
|
| 7 | No contact | 789 |
65.8%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 3 |
0.3%
|