| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 3 |
2.3%
|
| 2 | Every few weeks | 12 |
9.1%
|
| 3 | Every few months | 66 |
50%
|
| 4 | Not at all | 51 |
38.6%
|
| Sysmiss | 30 |