| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 22 |
10.6%
|
| 2 | Every few weeks | 38 |
18.4%
|
| 3 | Every few months | 67 |
32.4%
|
| 4 | Not at all | 80 |
38.6%
|
| Sysmiss | 9 |