| Value | Category | Cases | |
|---|---|---|---|
| 1 | Month and year | 14633 |
57.7%
|
| 2 | Month and age -y imp | 55 |
0.2%
|
| 3 | Year and age - m imp | 0 |
0%
|
| 4 | Not coded | 0 |
0%
|
| 5 | Year - a, m imp | 6138 |
24.2%
|
| 6 | Age - y, m imp | 4051 |
16%
|
| 7 | Month - a, y imp | 102 |
0.4%
|
| 8 | None - all imp | 385 |
1.5%
|
| Sysmiss | 9232 |