| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
3.1%
|
| 2 | Every few weeks | 49 |
21.5%
|
| 3 | Every few months | 99 |
43.4%
|
| 4 | Not at all | 73 |
32%
|
| Sysmiss | 104 |