| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
3.6%
|
| 2 | Every few weeks | 33 |
19.6%
|
| 3 | Every few months | 77 |
45.8%
|
| 4 | Not at all | 52 |
31%
|
| Sysmiss | 23 |