| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. cannot do it at all | 0 |
0%
|
| 1 | 1. yes, a lot of difficulty | 12 |
0.8%
|
| 2 | 2. yes, some difficulty | 136 |
9.5%
|
| 3 | 3. no, no difficulty | 1281 |
89.6%
|
| Sysmiss | 134 |