| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 2 |
1%
|
| 2 | Every few weeks | 10 |
5.2%
|
| 3 | Every few months | 72 |
37.1%
|
| 4 | Not at all | 110 |
56.7%
|
| Sysmiss | 33 |