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Extract the within-group error from a lm_robust model

I am probably missing something, but is there any way to get the within-subject error for a panel model made using lm_robust? I am thinking of something analogous to the VarCorr function in nlme, which calculates within-group error: https://rdrr.io/cran/nlme/man/VarCorr.html

Thank you so much!

Hi atolkin! I don’t think there is a way to do that – sorry!

Alex