| Value | Category | Cases | |
|---|---|---|---|
| 1 | LESS THAN 12 MONTHS AGO | 135 |
3.2%
|
| 2 | 12-23 MONTHS AGO | 106 |
2.5%
|
| 3 | 2 OR MORE YEARS AGO | 20 |
0.5%
|
| Sysmiss | 3974 |
93.8%
|