| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
5.8%
|
| 2 | Every few weeks | 21 |
20.2%
|
| 3 | Every few months | 43 |
41.3%
|
| 4 | Not at all | 34 |
32.7%
|
| Sysmiss | 60 |