| Value | Category | Cases | |
|---|---|---|---|
| 1 | a.No difficulty | 20628 |
84.6%
|
| 2 | b.Some difficulty | 1559 |
6.4%
|
| 3 | c.A lot of difficulty | 614 |
2.5%
|
| 4 | d.Cannot do at all | 24 |
0.1%
|
| 5 | e.Refused | 2 |
0%
|
| 6 | f.Don't know | 3 |
0%
|
| Missing value | 1542 |
6.3%
|