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st: xtreg and xtlogit with time-invariant variables
From
Shehzad Ali <[email protected]>
To
Stata List <[email protected]>
Subject
st: xtreg and xtlogit with time-invariant variables
Date
Sun, 28 Nov 2010 01:57:55 +0000 (GMT)
Hi listers,
I am wondering if someone could advise on this.
When xtreg and xtlogit models are implemented with fixed effects option, all
time-invariant variables are dropped from the analysis. I am working with a
dataset with response variable observed at 3 time points. The explanatory
variable includes timepoint_var (obviously varies with time) and the others are
time-invariant covariates that are dropped in the analysis. Could someone advise
on the best way to model the relationship between response at multiple
timepoints and the time-invariant variables? I should mention that the model
runs when random effects option is specified.
Any help would be greatly appreciated.
Many thanks,
Shehzad
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