| Value | Category | Cases | |
|---|---|---|---|
| 1 | no difficulty | 950 |
93.6%
|
| 2 | some difficulty | 45 |
4.4%
|
| 3 | a lot of difficulty | 13 |
1.3%
|
| 4 | cannot do at all | 7 |
0.7%
|
| 8 | don't know | 0 |
0%
|
| Sysmiss | 11934 |