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...r-squared for this model. I have been reading online about it and found there are multiple formulas for calculating R2 (psuedo) for glm (in R) with gaussian (r2 from linear model), logistic regression (1-deviance/null deviance), poisson distribution (using pR2 in pscl package, D-squared value from modEvA R package). But I could not find anything specific to gamma distributions. Can pscl and modEVA packages be used for gamma distributions as well? or there is any other formula for doing the same? Thanks Regards, Anchal -- Anchal Sharma, PhD Postdoctoral Fellow 195, Little Albany street, Cancer...