| Value | Category | Cases | |
|---|---|---|---|
| 1 | No – no difficulty | 2989 |
91.1%
|
| 2 | Yes – some difficulty | 217 |
6.6%
|
| 3 | Yes – a lot of difficulty | 53 |
1.6%
|
| 4 | Cannot do at all | 17 |
0.5%
|
| 8 | Do not know | 4 |
0.1%
|
| Sysmiss | 25 |