| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 29 |
6%
|
| 2 | Every few weeks | 90 |
18.7%
|
| 3 | Every few months | 203 |
42.1%
|
| 4 | Not at all | 66 |
13.7%
|
| Sysmiss | 94 |
19.5%
|