| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 3 |
4.6%
|
| 2 | Every few weeks | 11 |
16.9%
|
| 3 | Every few months | 26 |
40%
|
| 4 | Not at all | 12 |
18.5%
|
| Sysmiss | 13 |
20%
|