| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 13 |
12.9%
|
| 2 | Every few weeks | 25 |
24.8%
|
| 3 | Every few months | 48 |
47.5%
|
| 4 | Not at all | 15 |
14.9%
|
| Sysmiss | 63 |