Hi guys,   I'm a new sas user and I wanna learn somethings from you.   is any possible that I retain the variables in the new variable as like the list, step by step, for example:   I have four variables as below: dep = var1, var2, var3, var4   The Macro I wrote    %do i=1 %to %sysfunc(countw(&dep)); %let dep_nxt = %scan(&dep, &i);   data dset_temp; set &dset; if &dep_nxt =. then delete; run;  *(I wanna clean each independent variables, not cleaning all at same time);     first times : new_dep = var1_name  second times : new_dep= var1_name var2_name third times : new_dep = var1_name var2_name var2_name . . and there is a space between each name     thank you very much ... View more