| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
1%
|
|
| 1 | Every few days | 19 |
9.5%
|
| 2 | Every few weeks | 40 |
20%
|
| 3 | Every few months | 79 |
39.5%
|
| 4 | Not at all | 60 |
30%
|
| Sysmiss | 25 |