| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
8.5%
|
| 2 | Every few weeks | 20 |
21.3%
|
| 3 | Every few months | 42 |
44.7%
|
| 4 | Not at all | 24 |
25.5%
|
| Sysmiss | 28 |