| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very easy | 8 |
0.7%
|
| 2 | Easy | 24 |
2%
|
| 3 | Difficult | 13 |
1.1%
|
| 4 | Very Difficult | 14 |
1.2%
|
| 7 | No contact | 1141 |
95.1%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 0 |
0%
|