| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 10 |
4.2%
|
| 2 | Every few weeks | 50 |
21.1%
|
| 3 | Every few months | 108 |
45.6%
|
| 4 | Not at all | 69 |
29.1%
|
| Sysmiss | 52 |