| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
5.7%
|
| 2 | Every few weeks | 10 |
8.1%
|
| 3 | Every few months | 24 |
19.5%
|
| 4 | Not at all | 82 |
66.7%
|
| Sysmiss | 18 |