Topic 2: The nightmare (??) of longitudinal data analysis.
We are not going to delve into the depths of longitudinal data analysis in this class. Data analysis
for longitudinal designs is very complex. Whatever you do consult a statistician if you have longitudinal data -- including pre- and post-tests for things like training events. Start with something easy -- my slide show which is woefully inadequate, but might get the idea across. We will go over this in class. Remember that you need to use these analysis tecniques in any study where there is a "pre and post" measurement of some sort.
Longitudinal Designs Another not so great Mickie slide show.
Let's try something more sophisticated, but still basic. It's only 10 minutes long and it gives a GOOD description of the basics of longitudinal analysis. Analysing Longitudinal Data.
If you are at the basic stats level, look to this article provided by United States National Library of Medicine This article is FAR superior to the comments about data analysis in my slide show, although my slides are do explain how to analyze data from pre- and post-tests.
Garcia & Marder have the "real deal" about statistical measurements in longitudinal studies. Please rely on Garcia & Marder -- not my slide show -- if you are a more sophisticated user of statistics.
Garcia, T.P. & Marder, K. (2017) Statistical approaches to longitudinal data analysis in neurodegenerative diseases: Huntington's disease as a model. Current Neurology & Neuroscience Reports 17:14 DOI 10.1007/s11910-017-0723-4. This article is only for those with GOOD knowledge of statistical analyses.
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