| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very Easy | 49 |
2%
|
| 2 | Easy | 91 |
3.8%
|
| 3 | Difficult | 136 |
5.7%
|
| 4 | Very Difficult | 150 |
6.3%
|
| 7 | No contact | 1966 |
81.9%
|
| 9 | Don't know | 8 |
0.3%
|
| 98 | Refused | 0 |
0%
|