| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
5.9%
|
| 2 | Every few weeks | 38 |
27.9%
|
| 3 | Every few months | 64 |
47.1%
|
| 4 | Not at all | 26 |
19.1%
|
| Sysmiss | 30 |