| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
5.2%
|
| 2 | Every few weeks | 13 |
13.5%
|
| 3 | Every few months | 32 |
33.3%
|
| 4 | Not at all | 46 |
47.9%
|
| Sysmiss | 11 |