| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 10 |
4.5%
|
| 2 | Every few weeks | 25 |
11.2%
|
| 3 | Every few months | 68 |
30.4%
|
| 4 | Not at all | 121 |
54%
|
| Sysmiss | 36 |