Case Then Over Partition

PJGimino — Thu, 18 Oct 2012 19:26:38 GMT

I am trying to convert the code below into PROC SQL but am stuck. The 'over partition' is not recognized by PROC SQL. Any help would be greatly appreciated.

The output would look as follows for one patient:

ID_PATIENT DOS_FM DOS_TO ID_PROV PS ICN FLG EPISODE

100001 1/6/2011 1/12/2011 11002 02 1011 1 1

100001 1/12/2011 1/15/2011 11002 06 1012 0 1

100001 1/20/2011 1/28/2011 11002 51 1013 1 2

select

a.*,

sum(ep_flg)over(partition by id_patient order by dos_from_dt) episode

from

(

select

id_patient, dos_from_dt, dos_to_dt, id_provider_billing, dsc_patient_status, num_icn,

case when dos_from_dt-lag(dos_to_dt)over(partition by id_patient order by dos_from_dt) = 0 then 0 else 1 end ep_flg

from claim_business cb

where dos_from_dt between '01-jan-2011' and '31-jan-2011'

) a

Thanks for any help you can give me. I am a newbie.

Re: Case Then Over Partition

Tom — Thu, 18 Oct 2012 20:28:53 GMT

Can you translate that into English?

Looks like you want to create an episode variable.

data want ;

set claim_business;

by id_patient dos_from_dt ;

prev_to = lag(dos_to_dt);

if first.id_patient then episode=1;

else if dos_from_dt - prev_to > 1 then episode+1;

run;

Re: Case Then Over Partition

PJGimino — Thu, 18 Oct 2012 21:00:56 GMT

Tom:

Many thanks. You captured what I wanted right on the nose. I can't tell you how appreciative I am. If you are ever in the Boston area I will take you for a nice Italian dinner.

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Case Then Over Partition

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Re: Case Then Over Partition