| Value | Category | Cases | |
|---|---|---|---|
| 0 | never | 332 |
12.9%
|
| 1 | occasionally | 709 |
27.6%
|
| 2 | once a year | 104 |
4%
|
| 3 | sev times a year | 426 |
16.6%
|
| 4 | once/twi a month | 348 |
13.5%
|
| 5 | once a week | 223 |
8.7%
|
| 6 | sev times a week | 65 |
2.5%
|
| Sysmiss | 362 |
14.1%
|