| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
1.7%
|
| 2 | Every few weeks | 29 |
8.1%
|
| 3 | Every few months | 100 |
28%
|
| 4 | Not at all | 126 |
35.3%
|
| Sysmiss | 96 |
26.9%
|