| Value | Category | Cases | |
|---|---|---|---|
| 1 | LESS THAN 12 MONTHS AGO | 19 |
0.6%
|
| 2 | 12-23 MONTHS AGO | 24 |
0.8%
|
| 3 | 2 OR MORE YEARS AGO | 64 |
2.2%
|
| 9 | NO RESPONSE | 6 |
0.2%
|
| Sysmiss | 2815 |
96.1%
|