| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never or hardly ever | 150933 |
49.8%
|
| 2 | Once or twice a month | 83706 |
27.6%
|
| 3 | Once or twice a week | 51146 |
16.9%
|
| 4 | Almost every day | 17287 |
5.7%
|
| 7 | N/A | 203047 | |
| 8 | Invalid | 319 | |
| 9 | Miss | 9520 |