| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
4.1%
|
| 2 | Every few weeks | 6 |
4.9%
|
| 3 | Every few months | 36 |
29.5%
|
| 4 | Not at all | 75 |
61.5%
|
| Sysmiss | 16 |