| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 9 |
7.8%
|
| 2 | Every few weeks | 29 |
25.2%
|
| 3 | Every few months | 60 |
52.2%
|
| 4 | Not at all | 17 |
14.8%
|
| Sysmiss | 19 |