| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 25 |
6.8%
|
| 2 | Every few weeks | 60 |
16.2%
|
| 3 | Every few months | 184 |
49.7%
|
| 4 | Not at all | 101 |
27.3%
|
| Sysmiss | 51 |