| Value | Category | Cases | |
|---|---|---|---|
| -99 | 78 |
27%
|
|
| 1 | Every few days | 19 |
6.6%
|
| 2 | Every few weeks | 24 |
8.3%
|
| 3 | Every few months | 71 |
24.6%
|
| 4 | Not at all | 97 |
33.6%
|
| Sysmiss | 86 |