| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 11 |
8.4%
|
| 2 | Every few weeks | 30 |
22.9%
|
| 3 | Every few months | 58 |
44.3%
|
| 4 | Not at all | 32 |
24.4%
|
| -99 | 4 | ||
| Sysmiss | 25 |