| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 3 |
3.2%
|
| 2 | Every few weeks | 1 |
1.1%
|
| 3 | Every few months | 13 |
14%
|
| 4 | Not at all | 76 |
81.7%
|
| Sysmiss | 29 |