| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 21 |
9.5%
|
| 2 | Every few weeks | 39 |
17.6%
|
| 3 | Every few months | 100 |
45.2%
|
| 4 | Not at all | 61 |
27.6%
|
| Sysmiss | 29 |