| Value | Category | Cases | |
|---|---|---|---|
| -99 | 7 |
9.2%
|
|
| 1 | Every few DAYS | 4 |
5.3%
|
| 2 | Every few WEEKS | 16 |
21.1%
|
| 3 | Every few MONTHS | 38 |
50%
|
| 4 | Not at all | 11 |
14.5%
|
| Sysmiss | 18 |