Stata Panel Data Jun 2026

You cannot estimate the coefficients of variables that do not change over time (e.g., race, gender, or country of origin), as they are dropped during the transformation. Random Effects (RE) Model

* Plot a single variable over time for all units (spaghetti plot) xtline gdp stata panel data

If explanatory variables are correlated with the error term, Instrumental Variables (IV) approaches are needed, such as xtivreg . Summary of Key Commands Set Panel Data xtset panelvar timevar Summary Statistics xtsum varlist Fixed Effects xtreg depvar indepvars, fe Random Effects xtreg depvar indepvars, re Hausman Test hausman fe_model re_model Robust FE Model xtreg depvar indepvars, fe vce(cluster id) You cannot estimate the coefficients of variables that