| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 2 |
2.7%
|
| 2 | Every few weeks | 15 |
20.3%
|
| 3 | Every few months | 42 |
56.8%
|
| 4 | Not at all | 15 |
20.3%
|
| Sysmiss | 22 |