Computing likelihood ratio pseudo-R2
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I wish to compute the likelihood ratio pseudo-R2 from a logistic regression using glmfit.
R2 = (DevianceNull-DevianceModel)/(DevianceNull).
Does DevianceModel correspond to dev returned from glmfit?
[~, dev] = glmfit(X, Y, 'binomial');
In that case, is the pseudo-R2 computed as?
[~, devModel] = glmfit(X, Y, 'binomial');
[~, devNull] = glmfit(zeros(length(Y), 1), Y, 'binomial');
R2 = (DevNull-DevModel)/(DevNull);
Many thanks
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