| Value | Category | Cases | |
|---|---|---|---|
| 1 | LESS THAN 12 MONTHS AGO | 17 |
0.2%
|
| 2 | 12-23 MONTHS AGO | 14 |
0.1%
|
| 3 | 2 OR MORE YEARS AGO | 15 |
0.1%
|
| 9 | NO RESPONSE | 3 |
0%
|
| Sysmiss | 10968 |
99.6%
|