| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 30 |
5.6%
|
| 2 | Every few weeks | 84 |
15.6%
|
| 3 | Every few months | 162 |
30.1%
|
| 4 | Not at all | 262 |
48.7%
|
| Sysmiss | 25 |