# How does one obtain a type III ANOVA output for a GEE?

ANOVA types I, II and III are explained here. For GLMM and GEE differences see here. I am using the anova() function in geepack to determine the overall impact of several categorical variable in a GEE. This package can only run type I ANOVA. I was wondering if there is another package that can generate a similar output but using a type III ANOVA method. I know the package car can do this for GLMM, but not for a GEE.

• What makes type III tests appropriate? Type III = U.S. Senate. Type II = U.S. House of Representatives. It's often not logical for all categories of X to have the same weight regardless of their population. Oct 16, 2021 at 11:48

The emmeans package provides a Type III output for geepack models.