{Urgent} I am fairly new to SAS and have two questions.    First, I am trying to run this code. Would I need to run the data temp;set EHdata.ARCHdata; line with the other code I've written everytime> Because, when I do not, I get this error message:     Second, I am trying to create this new variable ANCComplication using categorical variables that already exist in my dataset. Here is the code I've written:       However, when I run a proc freq of ANCComplication, I get this:    Let me know what I am doing wrong for both of these problems! Thank you!  ... View more