| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 2 |
1%
|
| 2 | Every few weeks | 21 |
10.2%
|
| 3 | Every few months | 70 |
34%
|
| 4 | Not at all | 113 |
54.9%
|
| Sysmiss | 20 |