| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 27 |
8.5%
|
| 2 | Every few weeks | 47 |
14.7%
|
| 3 | Every few months | 121 |
37.9%
|
| 4 | Not at all | 124 |
38.9%
|
| Sysmiss | 49 |