****************************************************; data sf36b; set sf36a; IF 18<=AGE AND MALE>=0 THEN DO; SFAGE1=0;SFAGE2=0;SFAGE3=0;SFAGE4=0;SFAGE5=0; SFAGE6=0;SFAGE7=0;SFAGE8=0;SFAGE9=0; SFAGE10=0;SFAGE11=0;SFAGE12=0; END; IF 18<=AGE<=24 AND MALE=1 THEN SFAGE1=1; IF 24