Stata Panel Data ^new^ Jun 2026

For long panels (large T):

Understanding Panel Data Analysis in Stata: A Comprehensive Guide stata panel data

If these issues are present, you should use robust standard errors. The vce(robust) or vce(cluster panelvar) options can be used with xtreg to produce standard errors that are robust to heteroskedasticity and within-panel correlation. For more complex issues (e.g., cross-sectional dependence), you might use: For long panels (large T): Understanding Panel Data

A dataset can be (each individual is observed in every time period) or unbalanced (some observations are missing), and the Stata's xt commands are designed to handle both types. stata panel data