| Value | Category | Cases | |
|---|---|---|---|
| 1 | No, no difficulty | 38123 |
98.3%
|
| 2 | Yes, some | 449 |
1.2%
|
| 3 | Yes, a lot | 175 |
0.5%
|
| 4 | Cannot do at all | 39 |
0.1%
|
| Sysmiss | 6066 |