| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
3.9%
|
| 2 | Every few weeks | 22 |
17.3%
|
| 3 | Every few months | 52 |
40.9%
|
| 4 | Not at all | 48 |
37.8%
|
| Sysmiss | 17 |