| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 3 |
2.6%
|
| 2 | Every few weeks | 5 |
4.3%
|
| 3 | Every few months | 43 |
36.8%
|
| 4 | Not at all | 66 |
56.4%
|
| Sysmiss | 30 |