| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 15 |
3.2%
|
| 2 | Every few weeks | 58 |
12.2%
|
| 3 | Every few months | 190 |
40%
|
| 4 | Not at all | 212 |
44.6%
|
| Sysmiss | 3 |