| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
5.6%
|
| 2 | Every few weeks | 28 |
22.6%
|
| 3 | Every few months | 38 |
30.6%
|
| 4 | Not at all | 51 |
41.1%
|
| Sysmiss | 14 |