| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 11 |
3.5%
|
| 2 | Every few weeks | 60 |
18.9%
|
| 3 | Every few months | 146 |
46.1%
|
| 4 | Not at all | 100 |
31.5%
|
| Sysmiss | 76 |