| Value | Category | Cases | |
|---|---|---|---|
| 1 | No, no difficulty | 38667 |
98.5%
|
| 2 | Yes, some | 418 |
1.1%
|
| 3 | Yes, a lot | 136 |
0.3%
|
| 4 | Cannot do at all | 42 |
0.1%
|
| Sysmiss | 6055 |