| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
0%
|
|
| 1 | No, no difficulty | 25542 |
97.9%
|
| 2 | Yes, some | 262 |
1%
|
| 3 | Yes, a lot | 40 |
0.2%
|
| 4 | Cannot do | 236 |
0.9%
|
| Sysmiss | 1171 |