Thank you for this hint. I am testing this procedure and corresponding packages in R. My simulation finds that weight inflates significance. Hope scaled weight can correct such inflation. I think R packages have the same problem. ... View more

if you want to get ride of a specific label for x inherited from an Olddata       proc sql;     create table Yourdata as select ...,...., oldX as x label =""     from Olddata;   if x has a label that you want to remove     Data Yourdata; set Yourdata;     label x =;     run; ... View more