| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
5.6%
|
| 2 | Every few weeks | 32 |
25.6%
|
| 3 | Every few months | 63 |
50.4%
|
| 4 | Not at all | 23 |
18.4%
|
| Sysmiss | 41 |