I don't know much about Proc Genmod - how would I enter this into that procedure?  I'm looking to 1st estimate KM and calculate the expected cases for each group (C=KM*Q*PY) by maximizing the log likelihood.  Proc nlmixed is currently providing a value for KM and giving me the predicted values for each group.  I'll try scaling the data as you suggest, but I don't think proc nlmixed calculates CIs using the likelihood profile method.   Thank you. ... View more

It's not in my data set.  I don't know what this variable is supposed to be.  Unfortunately, I don't have access to the data that was used in the paper, I can only go off of the variables they defined in the text and comments within the code.  This variable (popn_num) looks like it should be defined by some of the macro variables - it's right at the beginning of the code:   %macro calc_km; %do POPNUM = 1 %to &N_POPNS; data one&POPNUM.; set WORK.PEST_2017_RESULT_FORPROGRAM; where popn_num = &POPNUM.; run;   Thank you for your help! ... View more