| Value | Category | Cases | |
|---|---|---|---|
| 1 | a.No difficulty | 21878 |
89.8%
|
| 2 | b.Some difficulty | 674 |
2.8%
|
| 3 | c.A lot of difficulty | 242 |
1%
|
| 4 | d.Cannot do at all | 32 |
0.1%
|
| 5 | e.Refused | 1 |
0%
|
| 6 | f.Don't know | 3 |
0%
|
| Missing value | 1542 |
6.3%
|