| Value | Category | Cases | |
|---|---|---|---|
| -99 | 8 |
2.9%
|
|
| 1 | Every few DAYS | 23 |
8.2%
|
| 2 | Every few WEEKS 3, Every few MONTHS 4, Not at all | 65 |
23.2%
|
| 3 | 121 |
43.2%
|
|
| 4 | 63 |
22.5%
|
|
| Sysmiss | 30 |