| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
3.2%
|
| 2 | Every few weeks | 8 |
6.5%
|
| 3 | Every few months | 41 |
33.1%
|
| 4 | Not at all | 24 |
19.4%
|
| Sysmiss | 47 |
37.9%
|