Member Training: A Gentle Introduction to Generalized Linear Mixed Models

Generalized linear mixed models (GLMMs) are incredibly useful—but they’re also a hard nut to crack.

As an extension of generalized linear models, GLMMs include both fixed and random effects. They are particularly useful when an outcome variable and a set of predictor variables are measured repeatedly over time and the outcome variable is a binary, nominal, ordinal or count variable. These models accommodate nesting of subjects in higher level units such as schools, hospitals, etc., and can also incorporate predictor variables collected at these higher levels.

In this webinar, we’ll provide a gentle introduction to GLMMs, discussing issues like:

• What GLMMs are and when to use them
• What to consider when specifying GLMMs
• How to compare competing GLMMs to identify the most adequate model for the data
• How to interpret model fit information
• What types of inference and prediction are supported by GLMMs
• How to check the validity of model assumptions

You’ll become familiar with the major issues involved in working with GLMMs so you can more easily transition to using these models in your work.

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About the Instructor

Dr. Isabella Ghement is the principal of Ghement Statistical Consulting Company Ltd., an independent statistical consulting and training firm in Richmond, British Columbia, Canada.

Isabella has presented a number of R and advanced regression short courses at conferences and universities. She is a member of the Steering Committee for the American Statistical Association’s Conference on Applied Statistical Practice 2017, where she chairs the Short Courses and Tutorials Sub-Committee.

Isabella obtained her Ph.D. in Statistics from the University of British Columbia.

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