options nodate pagesize=54 linesize=80;

/* Read in the input file   */

data ex0509;
* infile '../../../data/biostat/ex0509.dat';
infile 'C:\biostat\data\ex0509.dat';
input dose exhaustion;
run;

/* Obtain crosstabs and measures of association and confidence intervals  */

proc freq;
table dose*exhaustion / measures cl;
run;

quit;