| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 209295 |
41.8%
|
| 2 | A few times a year | 134646 |
26.9%
|
| 3 | About once a month | 73736 |
14.7%
|
| 4 | Several times a month | 57842 |
11.5%
|
| 5 | Several times a week | 25725 |
5.1%
|
| 7 | N/A | 4020 | |
| 8 | Invalid | 1001 | |
| 9 | Miss | 9693 |