| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
3.4%
|
| 2 | Every few weeks | 18 |
15.5%
|
| 3 | Every few months | 63 |
54.3%
|
| 4 | Not at all | 31 |
26.7%
|
| Sysmiss | 40 |