***********************************************************************
* This is a program that illustrates the use of PROC FREQ in SAS for  *
* determining an exact confidence interval for a binomial proportion. *
***********************************************************************;

proc format;
value succfmt 1='yes' 2='no';
run;

data Example_1;
input success count;
format success succfmt.;
cards;
1 03
2 16
;
run;

proc freq data=Example_1;
tables success/binomial alpha=0.05;
weight count/zeros;
title "Exact and Asymptotic 95% Confidence Intervals for a Binomial Proportion";
run;