I have 3 columns of data
patient group SA culture presence or not LU culture resent or not
A 1 1
B 1 0
A 0 1
B 1 0
.....
how to get the association/correlation between "A+SA present+LU present"
and "B+SA present+LU present"
g*******y 发帖数: 380
2
My guess is to construct chi-square table, then calculate odds ratio.