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st: fixed effect logit model
Just a quick and maybe naive question, why the sample size shrinked when
i estimate a fixed effect logit model using an unbalanced panel dataset?
the question goes like this:
i firstly estimate estimate an ordinary pulled data logit model with a
three year panel of 3107 observations for 1241 firms. when i tried the fixed
model, the observation number dropped to 1045 observations, which only
captured 427 firms. can you tell me why?
also, why these is no a similar xtprobit model for fixed effect?
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