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Is it necessary to include year dummies (i.year) in a regression if I have already included Fixed Effects? The FE already has country and year dummies?
Official xt commands in Stata with the -fe- option only control for unit effects (defined by your panel identifier in the xtset). Therefore, if your xtset command is
Official xt commands in Stata with the -fe- option only control for unit effects (defined by your panel identifier in the xtset). Therefore, if your xtset command is
Code:
xtset firm year
then year effects are not included.
So you would suggets a xtpoisson ... i.year, fe robust regression?
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