| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 38 |
7.2%
|
| 2 | Every few weeks | 99 |
18.8%
|
| 3 | Every few months | 204 |
38.7%
|
| 4 | Not at all | 186 |
35.3%
|
| Sysmiss | 36 |