| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 12 |
2.5%
|
| 2 | Every few weeks | 24 |
5%
|
| 3 | Every few months | 72 |
14.9%
|
| 4 | Not at all | 336 |
69.6%
|
| Sysmiss | 39 |
8.1%
|