| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all | 11805 |
92.3%
|
| 2 | A little | 356 |
2.8%
|
| 3 | A lot | 103 |
0.8%
|
| 4 | I cannot concentrate or remember at all | 13 |
0.1%
|
| 5 | Refuses to answer | 0 |
0%
|
| 6 | Does not know | 2 |
0%
|
| Missing value | 504 |
3.9%
|