| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 15 |
7.8%
|
| 2 | Every few weeks | 39 |
20.2%
|
| 3 | Every few months | 71 |
36.8%
|
| 4 | Not at all | 68 |
35.2%
|
| Sysmiss | 45 |