| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 200632 |
40.2%
|
| 2 | A few times a year | 90897 |
18.2%
|
| 3 | About once a month | 62251 |
12.5%
|
| 4 | Several times a month | 70879 |
14.2%
|
| 5 | Several times a week | 74545 |
14.9%
|
| 7 | N/A | 4018 | |
| 8 | Invalid | 810 | |
| 9 | Miss | 11926 |