| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 14 |
4.2%
|
| 2 | Every few weeks | 53 |
15.9%
|
| 3 | Every few months | 123 |
36.8%
|
| 4 | Not at all | 144 |
43.1%
|
| Sysmiss | 106 |