| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
4.9%
|
| 2 | Every few weeks | 18 |
14.6%
|
| 3 | Every few months | 53 |
43.1%
|
| 4 | Not at all | 46 |
37.4%
|
| Sysmiss | 18 |