| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 4 |
3%
|
| 2 | Every few weeks | 6 |
4.5%
|
| 3 | Every few months | 17 |
12.8%
|
| 4 | Not at all | 106 |
79.7%
|
| Sysmiss | 20 |