| Value | Category | Cases | |
|---|---|---|---|
| 1 | Easily | 931 |
18.6%
|
| 2 | With some difficulty | 311 |
6.2%
|
| 3 | With lots of difficulty | 119 |
2.4%
|
| 4 | Not at all | 1671 |
33.4%
|
| Missing value | 1975 |
39.4%
|