| Value | Category | Cases | |
|---|---|---|---|
| 1 | month and year | 1717 |
67.8%
|
| 2 | month and age -y imp | 7 |
0.3%
|
| 3 | year and age - m imp | 0 |
0%
|
| 5 | year - a, m imp | 655 |
25.9%
|
| 6 | age - y, m imp | 60 |
2.4%
|
| 7 | month - a, y imp | 7 |
0.3%
|
| 8 | none - all imp | 85 |
3.4%
|
| Sysmiss | 1458 |