| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 2 |
3.1%
|
| 2 | Every few weeks | 9 |
13.8%
|
| 3 | Every few months | 26 |
40%
|
| 4 | Not at all | 15 |
23.1%
|
| Sysmiss | 13 |
20%
|