| قيمة | فئة | حالات | |
|---|---|---|---|
| 1 | Month and year | 18276 |
89.2%
|
| 2 | Month and age -y imp | 293 |
1.4%
|
| 3 | Year and age - m imp | 0 |
0%
|
| 4 | Y & age - y ignored | 0 |
0%
|
| 5 | Year - a, m imp | 732 |
3.6%
|
| 6 | Age - y, m imp | 818 |
4%
|
| 7 | Month - a, y imp | 20 |
0.1%
|
| 8 | None - all imp | 342 |
1.7%
|
| Sysmiss | 786 |