* table 2 in paper;

proc format;
    value hstat 1="1: excel" 2="2: good" 3="3: fair" 4="4: poor";
run;

data ps_agree;
input q_pt q_sg frq;
cards;
1 1  25
1 2  63
1 3  0
1 4  3

2 1  0
2 2  0
2 3  0
2 4  0

3 1  7
3 2 122
3 3  0
3 4  40

4 1  1
4 2  21
4 3  0
4 4  66
;
run;
data ps_agree(drop=frq); set ps_agree;
do i=1 to frq;
output;
end; drop i;
format q_pt q_sg hstat.;
run;

TITLE "Incorrect"; run;
proc freq;
    tables q_pt*q_sg /kappa;
run;

TITLE "Correct using wkappa macro"; run;

%include 'wkappa.txt';

%kappa(q_pt, q_sg, 4, 1, uwt, 95, ps_agree);