| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
4.3%
|
| 2 | Every few weeks | 17 |
14.5%
|
| 3 | Every few months | 56 |
47.9%
|
| 4 | Not at all | 39 |
33.3%
|
| Sysmiss | 39 |