| Value | Category | Cases | |
|---|---|---|---|
| 1 | Cannot do at all | 2 |
0.2%
|
| 2 | No - no difficulty | 718 |
80.5%
|
| 3 | Yes – a lot of difficulty | 12 |
1.3%
|
| 4 | Yes – some difficulty | 160 |
17.9%
|