| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
0%
|
|
| 1 | No, no difficulty | 26002 |
97.8%
|
| 2 | Yes, some | 318 |
1.2%
|
| 3 | Yes, a lot | 51 |
0.2%
|
| 4 | Cannot do | 224 |
0.8%
|
| Sysmiss | 656 |