Estimates probit, logit, Poisson, negative binomial, and beta regression models, returning their marginal effects, odds ratios, or incidence rate ratios as an output. Greene (2008, pp. 780-7) provides a textbook introduction to this topic.
Changes in Version 1.1
o Functions added for calculating odds ratios and incidence rate ratios. o Package now includes beta regressions from the betareg package.