Does every family have at least 1 child? If some families have
zero children (child1=child2=child3=0), then omitting child1
from the model will mean the reference group is "0 or 1 children".
You may want to include all three indicator variables in the model,
so that the reference group is "0 children".
hth,
Jeph
Nikolaos Pandis wrote:
> Hi to all.
>
> I have the following binary (0,1) variables:
>
> child1, child2 child3
>
> They indicate if the family has or not 1, 2, 3+ children
> respectively.
>
> I would like to enter them in a logistic model using the xi commnad
> and child1 as reference, after I combined them into 1 variable.
>
> Any advise would be appreciated.
>
> Many thanks,
>
> Nick
>
>
>
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