| Value | Category | Cases | |
|---|---|---|---|
| 1 | No, no difficulty | 82026 |
91.9%
|
| 2 | Yes, some difficulty | 6196 |
6.9%
|
| 3 | Yes, a lot of difficulty | 897 |
1%
|
| 4 | Cannot do at all | 135 |
0.2%
|
| Sysmiss | 10925 |