| Value | Category | Cases | |
|---|---|---|---|
| -99 | 14 |
5%
|
|
| 1 | Every few DAYS | 16 |
5.7%
|
| 2 | Every few WEEKS 3, Every few MONTHS 4, Not at all | 49 |
17.4%
|
| 3 | 86 |
30.6%
|
|
| 4 | 116 |
41.3%
|
|
| Sysmiss | 29 |