| Value | Category | Cases | |
|---|---|---|---|
| 1 | month and year | 1529 |
94.4%
|
| 2 | month and age -y imp | 0 |
0%
|
| 3 | year and age - m imp | 58 |
3.6%
|
| 4 | y & age - y ignored | 0 |
0%
|
| 5 | year - a, m imp | 7 |
0.4%
|
| 6 | age - y, m imp | 4 |
0.2%
|
| 7 | month - a, y imp | 3 |
0.2%
|
| 8 | none - all imp | 18 |
1.1%
|
| Sysmiss | 5136 |