| value | category | cases | |
|---|---|---|---|
| 1 | Month and year | 1353 |
91.7%
|
| 2 | Month and age -y imp | 0 |
0%
|
| 3 | Year and age - m imp | 4 |
0.3%
|
| 4 | Y & age - y ignored | 77 |
5.2%
|
| 5 | Year - a, m imp | 40 |
2.7%
|
| 6 | Age - y, m imp | 0 |
0%
|
| 7 | Month - a, y imp | 0 |
0%
|
| 8 | None - all imp | 2 |
0.1%
|
| Sysmiss | 864 |