We introduce a newly developed R package AZIAD for analysing zero-inflated or zero-altered data. Compared with existing R packages, AZIAD covers a much larger class of zero-inflated and hurdle models,
Additional file 4: Table S4. Mathematical formula for the estimated mean, variance and zero proportion in the four count models that include the Poisson, negative binomial, zero-inflated Poisson and z
A demonstration of various potential relationships between the mean of the count distribution (λ) and the probability of an excess zero (π) under the general form of the linked model, logit(π) = γ0 +
