| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 6756 |
92.3%
|
| 2 | Some difficulty | 514 |
7%
|
| 3 | A lot of difficulty | 50 |
0.7%
|
| 4 | Cannot do at all | 0 |
0%
|
| 9 | Refused/No answer | 0 |
0%
|
| Sysmiss | 540 |