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Veterinary Epidemiologic Research: Count and Rate Data – Zero Counts

Continuing on the examples from the book Veterinary Epidemiologic Research, we look today at modelling count when the count of zeros may be higher or lower than expected from a Poisson or negative binomial distribution. When there’s an excess of zero counts, you can fit either a zero-inflated model or a hurdle model. If zero […]Image may be NSFW.
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