| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 23 |
10%
|
| 2 | Every few weeks | 78 |
33.8%
|
| 3 | Every few months | 110 |
47.6%
|
| 4 | Not at all | 20 |
8.7%
|
| -99 | 4 | ||
| Sysmiss | 25 |