| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
8.8%
|
| 2 | Every few weeks | 19 |
27.9%
|
| 3 | Every few months | 25 |
36.8%
|
| 4 | Not at all | 18 |
26.5%
|
| Sysmiss | 15 |