| Value | Category | Cases | |
|---|---|---|---|
| -99 | 12 |
4.3%
|
|
| 1 | Every few DAYS | 28 |
10%
|
| 2 | Every few WEEKS 3, Every few MONTHS 4, Not at all | 56 |
20%
|
| 3 | 100 |
35.7%
|
|
| 4 | 84 |
30%
|
|
| Sysmiss | 30 |