Sensitivity of score tests for zero‐inflation in count data
Sensitivity of score tests for zero‐inflation in count data
Abstract In many biomedical applications, count data have a large proportion of zeros and the zero‐inflated Poisson regression (ZIP) model may be appropriate. A popular score test for zero‐inflation, comparing the ZIP model to a standard Poisson regression model, was given by van den Broek. Similarly, for count data that …