| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 305 |
87.4%
|
| 2 | Some difficulty | 41 |
11.7%
|
| 3 | A lot of difficulty | 3 |
0.9%
|
| 4 | Cannot do at all | 0 |
0%
|
| 99 | Refused | 0 |
0%
|
| Sysmiss | 55 |