| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 9 |
2.4%
|
| 2 | Every few weeks | 31 |
8.4%
|
| 3 | Every few months | 91 |
24.7%
|
| 4 | Not at all | 185 |
50.3%
|
| Sysmiss | 52 |
14.1%
|