| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 17 |
8.6%
|
| 2 | Every few weeks | 53 |
26.9%
|
| 3 | Every few months | 88 |
44.7%
|
| 4 | Not at all | 39 |
19.8%
|
| Sysmiss | 41 |