| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 38 |
13.6%
|
| 2 | Every few weeks | 56 |
20.1%
|
| 3 | Every few months | 77 |
27.6%
|
| 4 | Not at all | 108 |
38.7%
|
| Sysmiss | 28 |