| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
7.2%
|
| 2 | Every few weeks | 38 |
39.2%
|
| 3 | Every few months | 36 |
37.1%
|
| 4 | Not at all | 16 |
16.5%
|
| Sysmiss | 12 |