| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 7 |
5.3%
|
| 2 | Every few weeks | 13 |
9.8%
|
| 3 | Every few months | 60 |
45.5%
|
| 4 | Not at all | 52 |
39.4%
|
| -99 | 3 | ||
| Sysmiss | 25 |