| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 12 |
8.8%
|
| 2 | Every few weeks | 34 |
24.8%
|
| 3 | Every few months | 54 |
39.4%
|
| 4 | Not at all | 37 |
27%
|
| Sysmiss | 16 |