| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
2.7%
|
| 2 | Every few weeks | 12 |
8.1%
|
| 3 | Every few months | 42 |
28.4%
|
| 4 | Not at all | 90 |
60.8%
|
| Sysmiss | 32 |