| Value | Category | Cases | |
|---|---|---|---|
| 1 | No, no difficulty | 83515 |
93.6%
|
| 2 | Yes, some difficulty | 3729 |
4.2%
|
| 3 | Yes, a lot of difficulty | 1452 |
1.6%
|
| 4 | Cannot do at all | 558 |
0.6%
|
| Sysmiss | 10925 |