st: Endogeneity of control variable

["Kenneth G. Liu" <gao.liu@gmail.com>]

Dear Statalist:

I am estimating a model using a panel dataset: LHS= (Y/GDP)it; RHS=(X, GDP, 
Z)it. Since GDP shows up in both sides, it is an endogenous variable. My 
question is: how does the endogeneity of GDP affect the estimation of the 
coefficient of X (my focal variable)?

Thank you

Gao

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