| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
8.2%
|
| 2 | Every few weeks | 14 |
19.2%
|
| 3 | Every few months | 34 |
46.6%
|
| 4 | Not at all | 19 |
26%
|
| Sysmiss | 11 |