| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 25 |
7.8%
|
| 2 | Every few weeks | 27 |
8.4%
|
| 3 | Every few months | 46 |
14.4%
|
| 4 | Not at all | 222 |
69.4%
|
| Sysmiss | 34 |