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shrutisd0
Fluorite | Level 6

I have a 3:1 nested case control matched sample dataset with match_id assigned per group

idmatch_idevent
110
410
910
1011
520
1120
1220
1331
830
1630
1730

I want to remove observations who have less than 4 of the same match_id (in this example observations with match_id=2). 

1 ACCEPTED SOLUTION

Accepted Solutions
A_Kh
Lapis Lazuli | Level 10
proc sql;
	create table have1 as
		select*, count(*) as total_id
			from have
		group by match_id;
quit; 
proc print;run; 
data want;
	set have1;
	where total_id gt 3;
proc print;run; 

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1 REPLY 1
A_Kh
Lapis Lazuli | Level 10
proc sql;
	create table have1 as
		select*, count(*) as total_id
			from have
		group by match_id;
quit; 
proc print;run; 
data want;
	set have1;
	where total_id gt 3;
proc print;run; 

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