| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 6 |
2.9%
|
| 2 | Every few weeks | 27 |
12.9%
|
| 3 | Every few months | 66 |
31.4%
|
| 4 | Not at all | 111 |
52.9%
|
| Sysmiss | 43 |