| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 3 |
1.8%
|
| 2 | Every few weeks | 40 |
24.1%
|
| 3 | Every few months | 76 |
45.8%
|
| 4 | Not at all | 47 |
28.3%
|
| Sysmiss | 25 |