I have binomial outcome data for three groups that I am analyzing with Cochran's Q test. As discussed at this site, Cochran.
However, I have to repeat this seven different times because I am analyzing performance of three diagnostic tests to see if they can find resistance to seven different drugs.
When there are significant differences between the three groups, I perform a series of three paired post-hoc McNemar tests to further analyze the data.
However, my question is when there are not significant differences, do I still perform the three paired post-hoc tests ?
Part of me says why not, these McNemar's are valid tests. However, another part of me figures that if this is the case, why do the Cochran's Q test at all ?
Could some one point me in the correct direction ?