Valores | Categoria |
---|---|
1 | Month and year |
2 | Month and age -year imputed |
3 | Year and age - month imputed |
4 | Year and age - age ignored |
5 | Year - age and month imputed |
6 | Age - year and month imputed |
7 | Month - age and year imputed |
8 | No information - all imputed |