Dear statalisters,
I am trying to use STATA module grqreg, but I can't.
After a sqreg regression in which the first independent variable is X, the
program always gives me the following error message:
. grqreg, cons ci ols olsci
postfile: variable X already exists
r(110).
I have tried to change label to the variable X (or leave it without label),
I have changed the order of regressors but nothing happened. Any idea on the
problem?
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