| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 2 |
1.7%
|
| 2 | Every few weeks | 6 |
5.1%
|
| 3 | Every few months | 47 |
40.2%
|
| 4 | Not at all | 62 |
53%
|
| Sysmiss | 39 |