| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
4.2%
|
| 2 | Every few weeks | 6 |
6.3%
|
| 3 | Every few months | 42 |
43.8%
|
| 4 | Not at all | 44 |
45.8%
|
| Sysmiss | 11 |