| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
4.6%
|
| 2 | Every few weeks | 19 |
14.6%
|
| 3 | Every few months | 43 |
33.1%
|
| 4 | Not at all | 62 |
47.7%
|
| Sysmiss | 32 |