| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 33 |
6.8%
|
| 2 | Every few weeks | 70 |
14.4%
|
| 3 | Every few months | 178 |
36.6%
|
| 4 | Not at all | 206 |
42.3%
|
| Sysmiss | 18 |