Data structures for longitudinal analysis: wide versus long
Learn how to create, store and reshape longitudinal data. Moving from wide to long data format and back using R.
Learn how to create, store and reshape longitudinal data. Moving from wide to long data format and back using R.
Great conversation with Leanpub co-founder Len Epp for the Frontmatter podcast about my background, survey research and longitudinal data analysis.
Learn how to explain change in time using time constant predictors using the multilevel model. Examples with real data and R code
Learn how to model non-linear change in time using the multilevel model for change in R. Hands on tutorial with real data.
Full list of summer schools covering statistics, data science and data collection. Find out dates, prices and courses on offer
Learn how to investigate the causal direction of two variables using the cross-lagged model and longitudinal data.
We show how adaptive designs can be used in the context of longitudinal surveys to maximize response rates and minimize selection bias.
Understanding how respondents switch modes of interview in a longitudinal study using latent class models. Findings from a panel study.
Learn how the multilevel model for change and the latent growth models are different and when to use each one.
Learn how to estimate and visualize nonlinear Latent Growth Models (LGM) using R and real world longitudinal data