| Value | Category | Cases | |
|---|---|---|---|
| 1 | LESS THAN 12 MONTHS AGO | 163 |
2.9%
|
| 2 | 12-23 MONTHS AGO | 126 |
2.2%
|
| 3 | 2 OR MORE YEARS AGO | 510 |
9.1%
|
| Sysmiss | 4806 |
85.7%
|