| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 9 |
3%
|
| 2 | Every few weeks | 30 |
10.1%
|
| 3 | Every few months | 77 |
25.8%
|
| 4 | Not at all | 182 |
61.1%
|
| -99 | 6 | ||
| Sysmiss | 56 |