search for: tp4100080p4100080

...pmen, na.action=na.exclude, model="pooling") /summary/(*GSm_in.pool*) works perfectly as well and all the variables are numeric. Thanks Manu -- View this message in context: http://r.789695.n4.nabble.com/Error-using-coeftest-with-a-heteroskedasticity-consistent-estimation-of-the-covar-tp4100080p4100080.html Sent from the R help mailing list archive at Nabble.com.