| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
4.1%
|
| 2 | Every few weeks | 25 |
20.7%
|
| 3 | Every few months | 60 |
49.6%
|
| 4 | Not at all | 31 |
25.6%
|
| Sysmiss | 26 |