I am new to statistics and was asked to develop a statistical model, which I had started, they ask me to carry out concordance and discordance now, however I don't know anything about these terms except that the concordance is the probability that a pair of individuals will both have a certain characteristic, given that one of the pair has the characteristic and the opposite for discordance.
Still I don't know why I have to find them and what would be the appropriate value of both for a decent model.
Solved – Concordance and Discordance role in modelling
logisticmodelingregression
Best Answer
In this paper I cover concordance and discordance. The paper is about
PROC LOGISTICinSASbut the section on concordance is more general. Briefly: Look at all possible pairs of observations. A pair is concordant if the observation with the higher observed value also has the higher predicted value.