| Value | Category | Cases | |
|---|---|---|---|
| 1 | No - no difficulty | 59056 |
96.5%
|
| 2 | Yes - some difficulty | 1551 |
2.5%
|
| 3 | Yes - a lot of difficulty | 447 |
0.7%
|
| 4 | Cannot do at all | 119 |
0.2%
|
| Sysmiss | 9463 |