| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 12 |
10.5%
|
| 2 | Every few weeks | 37 |
32.5%
|
| 3 | Every few months | 47 |
41.2%
|
| 4 | Not at all | 18 |
15.8%
|
| Sysmiss | 20 |