| Value | Category | Cases | |
|---|---|---|---|
| 1 | No - no difficulty | 56377 |
92.2%
|
| 2 | Yes - some difficulty | 3414 |
5.6%
|
| 3 | Yes - a lot of difficulty | 1104 |
1.8%
|
| 4 | Cannot do at all | 278 |
0.5%
|
| Sysmiss | 9463 |