| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 8 |
5.9%
|
| 2 | Every few weeks | 26 |
19.3%
|
| 3 | Every few months | 69 |
51.1%
|
| 4 | Not at all | 32 |
23.7%
|
| Sysmiss | 31 |