| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 17 |
8.2%
|
| 2 | Every few weeks | 38 |
18.3%
|
| 3 | Every few months | 91 |
43.8%
|
| 4 | Not at all | 62 |
29.8%
|
| -99 | 12 | ||
| Sysmiss | 34 |