Learn how to clean, analyse, and visualise longitudinal data

About the author

I’m an Associate Professor at the University of Manchester, specialising in collecting and analysing longitudinal data.

Over the past decade, I’ve published over 50 papers and book chapters using advanced models to study how people and societies change.

This website combines everything I’ve learned to offer you practical tools, real-world examples, and clear explanations for mastering longitudinal analysis.

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explanation of key concepts in longitudinal data like attrition, balanced and unbalanced data

Understand Longitudinal Data Without the Jargon

Clear explanations, visual examples, and step-by-step guides to help you master the basics.

creating dynamic document using rmarkdown

Get Practical with Code for Longitudinal Models

Ready-to-use code, real-world examples, and tutorials to learn how to use software efficiently.

correcting for measurement error using second order latent growth models

Apply the Right Models to Solve Real-World Problems

Guidance for real-world challenges like model selection, missing data and measurement error.

Longitudinal Data Analysis Using R

The book covers all the key skills needed to prepare, explore, and analyse longitudinal data. It interweaves explanations of key concepts, statistical modelling, code and visualisations using real-world data.

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Sample chapter