| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
1.9%
|
| 2 | Every few weeks | 22 |
10.6%
|
| 3 | Every few months | 74 |
35.7%
|
| 4 | Not at all | 107 |
51.7%
|
| Sysmiss | 19 |