| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
3.2%
|
| 2 | Every few weeks | 16 |
12.9%
|
| 3 | Every few months | 23 |
18.5%
|
| 4 | Not at all | 33 |
26.6%
|
| Sysmiss | 48 |
38.7%
|