| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never or hardly ever | 15906 |
18.9%
|
| 2 | Once or twice a month | 20355 |
24.1%
|
| 3 | Once or twice a week | 27378 |
32.5%
|
| 4 | Every or almost every day | 20682 |
24.5%
|
| 7 | N/A | 19644 | |
| 8 | Invalid | 142 | |
| 9 | Miss | 2180 |