| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 24 |
20.2%
|
| 2 | Every few weeks | 41 |
34.5%
|
| 3 | Every few months | 36 |
30.3%
|
| 4 | Not at all | 18 |
15.1%
|
| Sysmiss | 29 |