| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 10 |
10.4%
|
| 2 | Every few weeks | 28 |
29.2%
|
| 3 | Every few months | 38 |
39.6%
|
| 4 | Not at all | 20 |
20.8%
|
| Sysmiss | 18 |