| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 15 |
7.5%
|
| 2 | Every few weeks | 31 |
15.4%
|
| 3 | Every few months | 54 |
26.9%
|
| 4 | Not at all | 101 |
50.2%
|
| Sysmiss | 15 |