| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 191 |
41.6%
|
| 2 | Some difficulty | 178 |
38.8%
|
| 3 | A lot of difficulty | 80 |
17.4%
|
| 4 | Cannot do at all | 10 |
2.2%
|
| Sysmiss | 17301 |