| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 16 |
10.5%
|
| 2 | Every few weeks | 55 |
35.9%
|
| 3 | Every few months | 58 |
37.9%
|
| 4 | Not at all | 24 |
15.7%
|
| -99 | 11 | ||
| Sysmiss | 19 |