| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 203 |
91.4%
|
| 2 | Some difficulty | 18 |
8.1%
|
| 3 | A lot of difficulty | 0 |
0%
|
| 4 | Cannot be understood at all | 1 |
0.5%
|
| 9 | Missing | 0 |
0%
|
| Sysmiss | 157 |