| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 18 |
5.1%
|
| 2 | Every few weeks | 57 |
16.2%
|
| 3 | Every few months | 152 |
43.3%
|
| 4 | Not at all | 124 |
35.3%
|
| Sysmiss | 15 |