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Stata is a general-purpose statistical software package created in 1985 by StataCorp. Most of its users work in research, especially in the fields of economics, sociology, political science, biomedicine and epidemiology.

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How can I add a multidimensional panel to estimate TFP (year, id, region) in R?

In the STATA forum ( #18 #19; prodest library) it seems that to add fixed effects I have to create dummies Control parameter. … generate one dummy per year prodest log_y, free(log_lab1 log_lab2) state(log_k) proxy(log_investment) va met(op) poly(4) reps(40) id(id) t(year) control(dy*) To make a third panel PLM I found in STATA