xtdpdqml method

Dear all,

I have a dynamic panel data model with GDP/capita as dep. var for 98 regions in the EU. I have run unit root tests for my indep.var. and found that some are not stationary. I prefer to difference the model. Can I run then the model difference with the xtdpdqml command or xtdpdqml already uses the first difference of the variables?

Best regards,
Teodor