| Value | Category | Cases | |
|---|---|---|---|
| 1 | Month and year | 15529 |
71.6%
|
| 2 | Month and age -y imp | 5 |
0%
|
| 3 | Year and age - m imp | 0 |
0%
|
| 4 | 0 |
0%
|
|
| 5 | Year - a, m imp | 4918 |
22.7%
|
| 6 | Age - y, m imp | 1092 |
5%
|
| 7 | Month - a, y imp | 11 |
0.1%
|
| 8 | None - all imp | 133 |
0.6%
|
| Sysmiss | 846 |