| value | category | Casos | |
|---|---|---|---|
| 1 | Month and year | 2434 |
44.2%
|
| 5 | Year - a, m imp | 63 |
1.1%
|
| 7 | Month - a, y imp | 5 |
0.1%
|
| 8 | None - all imp | 27 |
0.5%
|
| Sysmiss | 2976 |