data framing;
infile 't:\framing.txt' firstobs=2;
input id sex age frw sbp sbp10 dbp chol cig chd yrschd death yrsdth cause;

if chd=1 then chdny=.;
if chd=0 then chdny=0;
if chd>1 then chdny=1;
run;

proc freq data=framing;
    tables sex*chdny/chisq relrisk;
run;