| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 16 |
5.9%
|
| 2 | Every few weeks | 45 |
16.5%
|
| 3 | Every few months | 111 |
40.7%
|
| 4 | Not at all | 101 |
37%
|
| Sysmiss | 34 |