Stata Panel Data Page

To analyze panel data in , you must first ensure the data is in "long" format—where each row represents one observation for a specific entity at a specific time 1. Declaring Panel Data Structure Before using specialized panel commands, you must tell which variable identifies the (e.g., countries, firms) and which identifies (e.g., years). xtset panelvar timevar xtset country year

): Represents the individual units (e.g., 1,000 distinct people). Time dimension ( stata panel data

xtserial ln_wage hours age tenure

[Your Name] Date: April 12, 2026

regress wage experience union i.year, vce(cluster id) To analyze panel data in , you must