%macro gg(i=);
data group&i;set case24_4(where=(group='&i'));run;
proc print data=group&i;run;
%mend gg;
data case24_4;
input group$ id$ age sex$ alt1 alt2;
cards;
2 11 39 1 46 37
2 12 43 2 32 24
1 13 47 1 70 54
1 14 45 1 31 23
2 21 56 1 23 19
2 22 59 1 16 22
1 23 52 1 60 63
1 24 50 1 72 37
1 31 54 2 17 24
1 32 53 2 73 63
;
run;
%gg(i=2)



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