| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 3 |
4.7%
|
| 2 | Every few weeks | 6 |
9.4%
|
| 3 | Every few months | 21 |
32.8%
|
| 4 | Not at all | 34 |
53.1%
|
| Sysmiss | 22 |