| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 19 |
16.4%
|
| 2 | Every few weeks | 31 |
26.7%
|
| 3 | Every few months | 48 |
41.4%
|
| 4 | Not at all | 18 |
15.5%
|
| Sysmiss | 18 |