| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 12 |
3.8%
|
| 2 | Every few weeks | 40 |
12.8%
|
| 3 | Every few months | 88 |
28.1%
|
| 4 | Not at all | 110 |
35.1%
|
| Sysmiss | 63 |
20.1%
|