| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
4.1%
|
| 2 | Every few weeks | 19 |
19.6%
|
| 3 | Every few months | 47 |
48.5%
|
| 4 | Not at all | 27 |
27.8%
|
| Sysmiss | 10 |