| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 15 |
12.4%
|
| 2 | Every few weeks | 48 |
39.7%
|
| 3 | Every few months | 43 |
35.5%
|
| 4 | Not at all | 15 |
12.4%
|
| Sysmiss | 27 |