| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 3 |
4.2%
|
| 2 | Every few weeks | 13 |
18.1%
|
| 3 | Every few months | 15 |
20.8%
|
| 4 | Not at all | 41 |
56.9%
|
| Sysmiss | 12 |