| Value | Category | Cases | |
|---|---|---|---|
| 1 | No, no difficulty | 37305 |
95.5%
|
| 2 | Yes, some difficulty | 1517 |
3.9%
|
| 3 | Yes, a lot of difficulty | 213 |
0.5%
|
| 4 | Cannot do it at all | 42 |
0.1%
|
| Sysmiss | 2504 |