| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 12 months ago | 21 |
33.9%
|
| 2 | 12-23 months ago | 14 |
22.6%
|
| 3 | 2 or more years ago | 25 |
40.3%
|
| 9 | Missing | 2 |
3.2%
|
| Sysmiss | 1152 |