| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 22 |
4.7%
|
| 2 | Every few weeks | 68 |
14.6%
|
| 3 | Every few months | 205 |
44.1%
|
| 4 | Not at all | 170 |
36.6%
|
| Sysmiss | 40 |