| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 13 |
3.6%
|
| 2 | Every few weeks | 47 |
12.8%
|
| 3 | Every few months | 101 |
27.6%
|
| 4 | Not at all | 205 |
56%
|
| Sysmiss | 55 |