reference variable

  1. K

    changing the reference variable value in class statement

    Hi, I am trying to run an analysis with the variable "histgr" (for histology group) and the values for histgr are 1, 2, 3, 4 and 5. How can I change the reference variable value from 5 (the last value and default reference) to 3 (my desired reference variable value)? Here is the code I have...