| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 10 |
2.1%
|
| 2 | Every few weeks | 38 |
7.9%
|
| 3 | Every few months | 139 |
28.8%
|
| 4 | Not at all | 182 |
37.8%
|
| Sysmiss | 113 |
23.4%
|