| Value | Category | Cases | |
|---|---|---|---|
| 1 | a.No difficulty | 10060 |
43.5%
|
| 2 | b.Some difficulty | 214 |
0.9%
|
| 3 | c.A lot of difficulty | 58 |
0.3%
|
| 4 | d.Cannot do at all | 6 |
0%
|
| Missing value | 12800 |
55.3%
|