| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 16 |
5.1%
|
| 2 | Every few weeks | 71 |
22.7%
|
| 3 | Every few months | 110 |
35.1%
|
| 4 | Not at all | 57 |
18.2%
|
| Sysmiss | 59 |
18.8%
|