| Value | Category | Cases | |
|---|---|---|---|
| 1 | Month and year | 1608 |
84.9%
|
| 2 | Month and age -y imp | 0 |
0%
|
| 3 | Year and age - m imp | 120 |
6.3%
|
| 4 | Y & age - y ignored | 92 |
4.9%
|
| 5 | Year - a, m imp | 65 |
3.4%
|
| 6 | Age - y, m imp | 3 |
0.2%
|
| 7 | Month - a, y imp | 0 |
0%
|
| 8 | None - all imp | 5 |
0.3%
|