| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 9 |
7.4%
|
| 2 | Every few weeks | 28 |
23.1%
|
| 3 | Every few months | 57 |
47.1%
|
| 4 | Not at all | 27 |
22.3%
|
| Sysmiss | 26 |