| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
2.9%
|
| 2 | Every few weeks | 27 |
11.1%
|
| 3 | Every few months | 86 |
35.2%
|
| 4 | Not at all | 124 |
50.8%
|
| Sysmiss | 19 |