Hi everyone,
I am having a trouble when trying to derive monthly evolution of patients per line of treatment. I would like, for a period between 2016/01/01 and 2019/07/31, to split each patient information per month in order to be able to only keep the month on target.
Dataset
Pat Poduct Line Line_first_date Line_end_date
1 ProdA 1 16/12/2010 23/02/2016
1 ProdB 2 10/03/2016 30/06/2017
1 ProdC 3 18/09/2017 20/01/2019
1 ProdD 4 05/03/2019 11/12/2019
Want
Pat Month Month_start_date Month_end_date Product Line
1 1 01/01/2016 31/01/2016 ProdA 1
1 2 01/02/2016 29/02/2016 ProdA 1
1 3 01/03/2016 31/03/2016 ProdB 2
1 4 01/04/2016 30/04/2016 ProdB 2
1 5 01/05/2016 31/05/2016 ProdB 2
1 . . . . .
1 . . . . .
1 . . . . .
1 41 01/05/2019 31/05/2019 ProdD 4
1 42 01/06/2019 30/06/2019 ProdD 4
1 43 01/07/2019 31/07/2019 ProdD 4
Do anyone have an idea of how to process?
Thank for your help.
Assuming there is not overlap date range for product.
data have;
input Pat Product $ Line (Line_first_date Line_end_date) (: ddmmyy10.);
format Line_first_date Line_end_date ddmmyy10.;
cards;
1 ProdA 1 16/12/2010 23/02/2016
1 ProdB 2 10/03/2016 30/06/2017
1 ProdC 3 18/09/2017 20/01/2019
1 ProdD 4 05/03/2019 11/12/2019
;
data temp;
set have;
do date=Line_first_date to Line_end_date;
output;
end;
drop Line_first_date Line_end_date;
run;
data date;
do date='01jan2016'd to '31jul2019'd;
year=year(date);month=month(date);output;
end;
format date ddmmyy10.;
run;
data temp2;
merge date(in=ina) temp;
by date;
if ina;
run;
proc sql;
create table want as
select year,month,max(pat) as pat,
min(date) as start format=ddmmyy10.,
max(date) as end format=ddmmyy10.,
max(product) as product,max(line) as line
from temp2
group by year,month;
quit;
Please post the data in usable form, see https://communities.sas.com/t5/SAS-Communities-Library/How-to-create-a-data-step-version-of-your-dat... if you don't know how to do this.
In the data your provides (and I concur with @andreas_lds request for a data step providing your sample input data), you have.
Pat Poduct Line Line_first_date Line_end_date
1 ProdA 1 16/12/2010 23/02/2016
1 ProdB 2 10/03/2016 30/06/2017
1 ProdC 3 18/09/2017 20/01/2019
1 ProdD 4 05/03/2019 11/12/2019
Line 2 ends on 30jun2017, but line 3 begins on 18sep2017. What PRODUCT values do you want assigned to July and August 2017? Please give a more complete description of what you want. And the same question applies to the gap between lines 3 and 4, since the stopping point is July 2019.
Please provide a more comprehensive description of your rules for the output data. Help us help you.
Assuming there is not overlap date range for product.
data have;
input Pat Product $ Line (Line_first_date Line_end_date) (: ddmmyy10.);
format Line_first_date Line_end_date ddmmyy10.;
cards;
1 ProdA 1 16/12/2010 23/02/2016
1 ProdB 2 10/03/2016 30/06/2017
1 ProdC 3 18/09/2017 20/01/2019
1 ProdD 4 05/03/2019 11/12/2019
;
data temp;
set have;
do date=Line_first_date to Line_end_date;
output;
end;
drop Line_first_date Line_end_date;
run;
data date;
do date='01jan2016'd to '31jul2019'd;
year=year(date);month=month(date);output;
end;
format date ddmmyy10.;
run;
data temp2;
merge date(in=ina) temp;
by date;
if ina;
run;
proc sql;
create table want as
select year,month,max(pat) as pat,
min(date) as start format=ddmmyy10.,
max(date) as end format=ddmmyy10.,
max(product) as product,max(line) as line
from temp2
group by year,month;
quit;
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