| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 3 |
3.1%
|
| 2 | Every few weeks | 31 |
32.3%
|
| 3 | Every few months | 42 |
43.8%
|
| 4 | Not at all | 20 |
20.8%
|
| Sysmiss | 13 |