| Value | Category | Cases | |
|---|---|---|---|
| 1 | Within past month | 988 |
57%
|
| 2 | Within past 3 months | 349 |
20.1%
|
| 3 | Within 6 months | 126 |
7.3%
|
| 4 | More than 6 months ago | 271 |
15.6%
|
| Sysmiss | 10746 |