| Value | Category | Cases | |
|---|---|---|---|
| -99 | 80 |
27.9%
|
|
| 1 | Every few days | 16 |
5.6%
|
| 2 | Every few weeks | 26 |
9.1%
|
| 3 | Every few months | 43 |
15%
|
| 4 | Not at all | 122 |
42.5%
|
| Sysmiss | 88 |