| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 16 |
4.4%
|
| 2 | Every few weeks | 66 |
18%
|
| 3 | Every few months | 147 |
40.2%
|
| 4 | Not at all | 137 |
37.4%
|
| Sysmiss | 55 |