Stata Panel Data ❲2025-2027❳

(Note: xtserial is a user-written command. Install via ssc install xtserial ) .

To visualize your data, xtline draws separate time-series plots for each panel unit or overlays them on a single graph. xtline wages Estimating Panel Data Models

[ Pooled OLS ] | | Poolability Test / F-test v [ Fixed Effects (FE) ] ^ | | Hausman Test v [ Random Effects (RE) ] ^ | | Breusch-Pagan LM Test v [ Pooled OLS ] Step 1: Fixed Effects vs. Pooled OLS (F-test) When you run xtreg ..., fe , Stata automatically includes an stata panel data

xtreg gdp fdi trade gcf, fe

By mastering these commands and understanding the underlying models, you can perform rigorous longitudinal analysis, ensuring your results account for both the static and dynamic components of your panel data [5.4]. If you'd like, I can provide: A specific using a sample dataset How to interpret the output of a xtreg, fe model How to handle missing data in panel sets (Note: xtserial is a user-written command

Serial correlation occurs when errors in one period are correlated with errors in a subsequent period within the same entity. Use the Wooldridge test to detect this: ssc install xtserial xtserial y x1 x2 x3 Use code with caution.

reshape wide income_, i(id) j(year)

Before any xt command can be run, you must first define the panel's structure using the xtset command. This informs Stata which variable uniquely identifies the cross-sectional unit and which variable denotes time. The basic syntax is xtset panelvar timevar , where panelvar is the individual identifier and timevar is the time index.

xtlogit y x1 x2 x3, fe * Fixed effects panel logit xtlogit y x1 x2 x3, re * Random effects panel logit xtprobit y x1 x2 x3, re * Random effects panel probit Use code with caution. 6. Summary Checklist for Panel Data Analysis Stata Command Set up panel parameters xtset panel_id time_id 2 Descriptive statistics xtdescribe , xtsum 3 Run base models xtreg y x, fe and xtreg y x, re 4 Test for RE suitability xttest0 (after RE) 5 Choose between FE and RE hausman fe_model re_model 6 Check for serial correlation xtserial y x 7 Correct standard errors Add vce(cluster panel_id) to regression xtline wages Estimating Panel Data Models [ Pooled

Panel data (or longitudinal data) tracks the same entities—such as individuals, firms, or countries—over multiple time periods. In Stata, these models fall under the xt (cross-sectional time-series) command suite. 1. Data Preparation and Setup