| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 12 |
5.6%
|
| 2 | Every few weeks | 25 |
11.6%
|
| 3 | Every few months | 60 |
27.9%
|
| 4 | Not at all | 118 |
54.9%
|
| Sysmiss | 45 |