| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
8.8%
|
| 2 | Every few weeks | 18 |
19.8%
|
| 3 | Every few months | 39 |
42.9%
|
| 4 | Not at all | 26 |
28.6%
|
| Sysmiss | 20 |