Interaction effects in logistic regression (Q2716343)

This booklet is an introduction to the analysis of interaction effects in logistic regression by means of product terms. The focus is on the interpretation of the coefficients of interactive logistic models for a wide range of scenarios encountered in the research literature. It is assumed that the reader is familiar with the basics of logistic regression and the concept of hierarchical logistic regression. The book is neither a technical nor an advanced exposition of this complex topic. The author's goal is to present a nontechnical, introductory orientation to the interpretation of logistic coefficients in simple product term models when the product terms are defined to explore certain forms of interactions.NEWLINENEWLINENEWLINEAlthough many books on logistic regression discuss general strategies for testing interactions, few provide readers with the tools to interpret and understand the meaning of coefficients in equations with product terms. This book fills this gap. The author explicitly avoids complex formulas that can be intimidating to the applied researcher. As an alternative, he provides the reader with simple (but cumbersome) computer-based heuristics that permit the simple calculation of parameter estimates and estimated standard errors that will typically be of interest.