| Value | Category | Cases | |
|---|---|---|---|
| 1 | Easily | 445 |
8.9%
|
| 2 | With some difficulty | 195 |
3.9%
|
| 3 | With lots of difficulty | 148 |
3%
|
| 4 | Not at all | 2244 |
44.8%
|
| Missing value | 1975 |
39.4%
|