Hello,
data have;
patient_num | Procedure Date | Status Date | Organ |
patient11 | 03/07/2002 | 02/23/2004 | Heart |
patient11 | 02/23/2004 | 10/01/2014 | Lung |
patient12 | 04/23/2006 | 10/13/2014 | Heart |
patient13 | 10/21/2007 | 10/10/2016 | Bone |
patient14 | 05/06/2009 | 04/30/2017 | Liver |
patient14 | 05/09/2010 | 07/15/2017 | Liver |
data want;
patient_num | Procedure Date | Status Date | Organ | Multiorgan |
patient11 | 03/07/2002 | 02/23/2004 | Heart | Yes |
patient11 | 02/23/2004 | 10/01/2014 | Lung | Yes |
patient12 | 04/23/2006 | 10/13/2014 | Heart | No |
patient13 | 10/21/2007 | 10/10/2016 | Bone | No |
patient14 | 05/06/2009 | 04/30/2017 | Liver | No |
patient14 | 05/09/2010 | 07/15/2017 | Liver | No |
I want to flag rows where a patient has multiple organ procedures. So for patient 11, he/she has both heart and lung surgeries. So new variable Multiorgan='Yes'.
Is there a way to do this in data step? Or proc SQL?
Thank you!
SQL is quicker in this case.
proc sql;
create table want as
select *,
case when max(organ)=min(organ) then 'No'
else 'Yes' end
as multiorgan
from have
group by patient_num;
quit;
SQL is quicker in this case.
proc sql;
create table want as
select *,
case when max(organ)=min(organ) then 'No'
else 'Yes' end
as multiorgan
from have
group by patient_num;
quit;
If the data are sorted by patient_num:
data want;
set have;
by patient_num;
if first.patient_num and last.patient_num then multi_organ='No';
else multi_organ='Yes';
run;
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