| Value | Category | Cases | |
|---|---|---|---|
| Don't know | 26 |
0.4%
|
|
| More than half the days | 543 |
9.3%
|
|
| Nearly every day | 430 |
7.3%
|
|
| Not at all | 3808 |
65%
|
|
| Refused | 2 |
0%
|
|
| Several days | 1053 |
18%
|