Dear colleagues can I still use kap in stata for intra-observer variability? I have two readings by the same reader trying to asses presence of radiologically confirmed pneumonia. With 1 denoting presence of rcp, 0 denoting absence of rcp.Have a look at the data:

input float(reader1_a reader1_b)
1 1
0 0
1 1
1 1
0 1
1 0
1 1
end

can I do something like;
kap reader1_a reader1_b?