| قيمة | فئة | حالات | |
|---|---|---|---|
| 1 | 0 - 11 months | 5 |
6.9%
|
| 2 | 12+ months ago | 27 |
37.5%
|
| 3 | Don't remember | 40 |
55.6%
|
| Sysmiss | 21195 |