| Value | Category | Cases | |
|---|---|---|---|
| 1 | Easily | 742 |
14.8%
|
| 2 | With some difficulty | 218 |
4.4%
|
| 3 | With lots of difficulty | 124 |
2.5%
|
| 4 | Not at all | 1948 |
38.9%
|
| Missing value | 1975 |
39.4%
|