Hello,

I am running a regression in STATA (xtgee).

xtgee Profit number_employees company_size , link(log) corr(ar1) iterate(100) family(igaussian) vce(robust)


When running the regression STATA tells me:

note: observations not equally spaced
modal spacing is delta Year = 1 unit
12 groups omitted from estimation
note: some groups have fewer than 2 observations
not possible to estimate correlations for those groups
25 groups omitted from estimation

This is totally fine for me. But I would like to know which observations ended up being part of the regression. Is there a way to do that?

Thanks for the help!!!