| Value | Category | Cases | |
|---|---|---|---|
| 1 | a.No difficulty | 17416 |
71.5%
|
| 2 | b.Some difficulty | 1691 |
6.9%
|
| 3 | c.A lot of difficulty | 870 |
3.6%
|
| 4 | d.Cannot do at all | 94 |
0.4%
|
| 5 | e.Refused | 1 |
0%
|
| 6 | f.Don't know | 5 |
0%
|
| Missing value | 4295 |
17.6%
|