| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 3581 |
90.3%
|
| 2 | Some difficulty | 326 |
8.2%
|
| 3 | A lot of difficulty | 48 |
1.2%
|
| 4 | Cannot remember things at all | 5 |
0.1%
|
| 9 | No response | 7 |
0.2%
|
| Sysmiss | 362 |