| Value | Category | Cases | |
|---|---|---|---|
| 1 | No, no difficulty | 88085 |
98.7%
|
| 2 | Yes, some difficulty | 711 |
0.8%
|
| 3 | Yes, a lot of difficulty | 263 |
0.3%
|
| 4 | Cannot do at all | 195 |
0.2%
|
| Sysmiss | 10925 |