[email protected]
> > I am trying to create a weight variable to use with the
> gllamm command,
> > but I just can't get it to work. Here is the problem: I
> have the data in
> > long format looking like this:
> >
> > subj_id item_number item_response
> > 1 1 0
> > 1 2 1
> > 1 3 0
> > 2 1 1
> > 2 2 1
> > 2 3 0
> >
> > I am trying to create a weight variable that represents
> the number of
> > subjects with the same item_response pattern, meaning the
> same responses
> > for all items within an individual.
SamL
> In Stata 7 I believe the -contract- command is what you would use.
I don't think -contract- helps without a prior -reshape-.
I would do this:
reshape wide item_response, i(subj_id) j(item_number)
bysort item_response* : gen weight = _N
Nick
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