| Value | Category | Cases | |
|---|---|---|---|
| 1 | a.No difficulty | 10267 |
44.4%
|
| 2 | b.Some difficulty | 638 |
2.8%
|
| 3 | c.A lot of difficulty | 251 |
1.1%
|
| 4 | d.Cannot do at all | 57 |
0.2%
|
| 5 | f.don't know | 2 |
0%
|
| Missing value | 11923 |
51.5%
|