| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 9 |
7.7%
|
| 2 | Every few weeks | 20 |
17.1%
|
| 3 | Every few months | 46 |
39.3%
|
| 4 | Not at all | 42 |
35.9%
|
| Sysmiss | 39 |