I am trying to write code to read recurrent diseases in a database. I already successfully wrote code for comorbidity in the database. However I cannot get the code that I have written below to work.
data kevinrecurrent;
set testtreat;
length recurrent $150;
recurrent = cat(lastname, firstname, dob_mo, dob_day, dob_yr, diagnosisdate);
newrecurr=.;
if newrecurr ge 14 and newrecurr le 60;
I am attempting to create a variable (recurrent) which reads the firstname, lastname, date of birth and diagnosis date for the patient.
I am also attempting to establish that recurrent cases are those between 2 weeks and 60 days after the first treatment
how do I do this? I am stuck at above.
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