| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 3789 |
95.5%
|
| 2 | Some difficulty | 141 |
3.6%
|
| 3 | A lot of difficulty | 22 |
0.6%
|
| 4 | Cannot be understood at all | 7 |
0.2%
|
| 9 | No response | 8 |
0.2%
|
| Sysmiss | 362 |