| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 1 |
0.4%
|
| 2 | Every few weeks | 14 |
5.9%
|
| 3 | Every few months | 110 |
46%
|
| 4 | Not at all | 114 |
47.7%
|
| Sysmiss | 55 |