| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
6.5%
|
| 2 | Every few weeks | 39 |
31.7%
|
| 3 | Every few months | 56 |
45.5%
|
| 4 | Not at all | 20 |
16.3%
|
| Sysmiss | 15 |