| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
6.5%
|
| 2 | Every few weeks | 19 |
20.4%
|
| 3 | Every few months | 43 |
46.2%
|
| 4 | Not at all | 25 |
26.9%
|
| Sysmiss | 18 |