| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 11 |
5.6%
|
| 2 | Every few weeks | 37 |
18.9%
|
| 3 | Every few months | 71 |
36.2%
|
| 4 | Not at all | 77 |
39.3%
|
| Sysmiss | 14 |