Modeling doctor visits using a right-censored zero-inflated Conway–Maxwell Poisson regression

Count data with a single mode at zero and a few extreme counts in the outcome variable are frequently seen in medical research. In this article, the response variable—the number of doctor visits in a 3-month interval—exhibited an inflated zero frequency count and a few extreme values. We introduce a right-censored zero-inflated Conway–Maxwell Poisson (CZICMP) regression model to simultaneously handle the problems of excess zeros and extreme...