| Value | Category | Cases | |
|---|---|---|---|
| 1 | No, no difficulty | 38842 |
98.9%
|
| 2 | Yes, some | 312 |
0.8%
|
| 3 | Yes, a lot | 72 |
0.2%
|
| 4 | Cannot do at all | 37 |
0.1%
|
| Sysmiss | 6055 |