| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 18 |
9.8%
|
| 2 | Every few weeks | 73 |
39.7%
|
| 3 | Every few months | 73 |
39.7%
|
| 4 | Not at all | 20 |
10.9%
|
| Sysmiss | 12 |