Hello, In my dataset each person (eventID) is associated with 1-3 pathogens (pathogenSeq). I want to look at the total counts of each of the pathogens, but some people have tested with more than 1 pathogen. How would I make it so that if a person has multiple pathogens they are counted for each pathogen? Here is what I tried per my teacher's advice but the output is blank: proc sort data=infection;
by eventID pathogenSeq; run;
data infection2;
set infection;
if first.pathogenSeq = 1 then count = 0;
count = count + 1;
if last.pathogenSeq = 1 then output;
retain count; run; Would it make more sense to create a new variable for pathogen? Any help is appreciated, thanks!
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