| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
8.9%
|
| 2 | Every few weeks | 11 |
12.2%
|
| 3 | Every few months | 21 |
23.3%
|
| 4 | Not at all | 50 |
55.6%
|
| Sysmiss | 21 |