| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 2 |
1.9%
|
| 2 | Every few weeks | 6 |
5.8%
|
| 3 | Every few months | 31 |
30.1%
|
| 4 | Not at all | 64 |
62.1%
|
| Sysmiss | 26 |