| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 15 |
9.9%
|
| 2 | Every few weeks | 20 |
13.2%
|
| 3 | Every few months | 66 |
43.4%
|
| 4 | Not at all | 51 |
33.6%
|
| Sysmiss | 28 |