| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
4.1%
|
| 2 | Every few weeks | 25 |
13%
|
| 3 | Every few months | 77 |
39.9%
|
| 4 | Not at all | 83 |
43%
|
| Sysmiss | 23 |