| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 230652 |
46.2%
|
| 2 | A few times a year | 73340 |
14.7%
|
| 3 | About once a month | 56118 |
11.2%
|
| 4 | Several times a month | 68187 |
13.7%
|
| 5 | Several times a week | 70861 |
14.2%
|
| 7 | N/A | 4020 | |
| 8 | Invalid | 1264 | |
| 9 | Miss | 11516 |