My apologies, the intended diagram was totally muddled in my first posting.
> -----Original Message-----
> From: siyama
> Sent: Wednesday, 9 July 2003 17:21
> To: '[email protected]'
> Subject: Query: Nested-logit
>
> Dear Stata-listers,
>
> A colleague of mine is trying to run a nested logit on the following
>
>
> __ Public
>
> |
> ___ Yes__|
> |
> |__ Private
> |
> Seek Health Care |
> |___ No Care
>
> After rearranging the data set, she can obtain the following "nlogittree"
> output
>
> . nlogittree choices type
> tree structure specified for the nested logit model
> top --> bottom
> type choices
> --------------------------
> type1 Public
> Private
> type2 No Care
>
>
> .xi:nlogit chosen (choices = i.sex X2 X3) (type = i.sex X2 X3),
> group(hhid)
> i.sex _Isex_1-2 (naturally coded; _Isex_1 omitted)
> tree structure specified for the nested logit model
> top --> bottom
> type choices
> --------------------------
> type1 Public
> Private
> type2 No Care
> unbalanced data
> r(459);
>
> Could the "unbalanced data" error be borne out of the lack of alternatives
> beyond "Seek Health Care == No Care", or is more to do with a data
> restructuring/ management issue.
>
> Many thanks for your thoughts and suggestions in advance.
>
> Amani
>
>
>
>
>
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