| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 29 |
6.3%
|
| 2 | Every few weeks | 69 |
15.1%
|
| 3 | Every few months | 179 |
39.2%
|
| 4 | Not at all | 180 |
39.4%
|
| Sysmiss | 48 |