Xtset Stata. Xtset id wave RE. The panel variable is country in this case - all observations for Sweden are connected all observations for Norway are connected and so.
But for the within s we only want variation within units and we want to ignore variation between units. Msh855 Jun 2 18 at 1620 You can also xtset in terms of industry alone. The storage types of both panelvar and timevar must be numeric and both variables must contain integers only.
We need to specify two variables for Stata.
2-period lead x t2. The time-series operators are Operator Meaning L. The timevar is optional and may or may not be necessary depending on our analysis. Technical note In previous versions of Stata there was no xtset command.
