| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 21 |
8.5%
|
| 2 | Every few weeks | 20 |
8.1%
|
| 3 | Every few months | 66 |
26.8%
|
| 4 | Not at all | 139 |
56.5%
|
| Sysmiss | 17 |