| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 5 |
3%
|
| 2 | Every few weeks | 30 |
18.1%
|
| 3 | Every few months | 87 |
52.4%
|
| 4 | Not at all | 36 |
21.7%
|
| -99 | 8 |
4.8%
|
|
| Sysmiss | 25 |