Hi everyone! I'm having a little trouble with a data set. I've the idea of dropping a variable if all the observations have the value of 1, The table is like this;   var1 var2 var3 var4 0.5  1  1.2  0.4 0.9  1  1.5  0.2 0.7  1   1.1  0.3 1     1    1    1   I want to drop the variable var2 in this case. My problem is that I can't do it mannualy, as the four variables are being included because of a macro, and the name of them can change. Is there any way to remove it conditionally? Thanks in advance. ... View more