Match-Control with multiple sets

Pabster — Thu, 14 Mar 2019 14:34:25 GMT

Hi all.
I posted this question before but apparently it looks more like a case of random case-control sampling.

So my data looks like this(Active companies):

and like this (inactive companies):

I need SAS to randomly select an ACTIVE(so the COSTAT of the company =0) company from the Active data set and pair it to an Inactive company(COSTAT=1) from my second data set.
The pairing only has two constraint, the active company must be in the same industry as the inactive one (same SIC) and the same Fyear for proper analysis.

My final set should look somehow like this:

DATADATE FYEAR DLRSN CONM DLDTE COSTAT SICH

03/12/1992 1989 . A 0 112

03/12/1993 1989 02 B 1990 1 112

03/12/1994 1990 . D 0 333

03/12/1992 1990 03 F 1992 1 333

03/12/1993 1994 . J 0 445

03/12/1994 1994 03 L 1996 1 445

03/12/1998 1998 . I 0 001

03/12/1998 1998 02 Z 2000 1 001

Hope it`s clear and you guys can me help me out.

*UPDATE*
I used this code to create a random sample data set for the active companies and then merge it with the inactive one. Their is just no pairing what so ever. I just need ONE active for ONE inactive.:

proc surveyselect data=AltmanV2.Donnee_Avant_F_Sante
					out=StratifiedSRS
					sampsize=1643
					method=srs
					outall;
		strata COSTAT;
run;

data Strat;
set StratifiedSRS;
if Selected=1 then output;
else delete;
run;

data test;
set Strat AltmanV2.Donnee_Avant_F;
SIC=INT(input(SIC,4.)/100);
run;

proc sort data= test;
by Fyear SIC;
run;

Re: Match-Control with multiple sets

ChrisNZ — Thu, 14 Mar 2019 21:55:38 GMT

Can you merge THEN random select company pairs?

Re: Match-Control with multiple sets

Pabster — Mon, 18 Mar 2019 14:03:35 GMT

Yes I've already merge it to see how that would work but I can' t make it work neither

Re: Match-Control with multiple sets

ChrisNZ — Mon, 18 Mar 2019 21:06:52 GMT

Reply unclear. If you merge first surely you can select pairs.

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Match-Control with multiple sets

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