| Value | Category | Cases | |
|---|---|---|---|
| 1 | Month and year | 904 |
72%
|
| 2 | Month and age -y imp | 1 |
0.1%
|
| 3 | Year and age - m imp | 0 |
0%
|
| 4 | not coded | 0 |
0%
|
| 5 | Year - a, m imp | 318 |
25.3%
|
| 6 | Age - y, m imp | 29 |
2.3%
|
| 7 | Month - a, y imp | 0 |
0%
|
| 8 | None - all imp | 4 |
0.3%
|
| Sysmiss | 1316 |