| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 15 |
7.5%
|
| 2 | Every few weeks | 34 |
17.1%
|
| 3 | Every few months | 47 |
23.6%
|
| 4 | Not at all | 103 |
51.8%
|
| Sysmiss | 39 |