Review of an Information Theoretic Approach to Ecology and Evolution

There are always those papers that you mean to read but just sit on your desktop or in your To_Read folder forever. Grueber et al. 2011 was one of those for me and I finally got around to reading it. Grueber, Nakagawa, Laws, and Jamieson. 2011. Multimodel inference in ecology and evolution: challenges and solutions.…

GEE QIC update

Here is improved code for calculating QIC from geeglm in geepack in R (original post). Let me know how it works. I haven’t tested it much, but is seems that QIC may select overparameterized models. In the code below, I had to replace <- with = because wordpress didn’t except <- within code or pre…

Conference Presentations

I recently gave a talk at the Ecological Society of America (ESA) annual meeting in Portland, OR and a poster presentation at the World Congress of Herpetology meeting in Vancouver, BC, Canada. Both presentations were comparing generalized linear mixed models (GLMM) and generalized estimating equations (GEE) for analyzing repeated count data. I advocate for using…

Plotting 95% Confidence Bands in R

I am comparing estimates from subject-specific GLMMs and population-average GEE models as part of a publication I am working on. As part of this, I want to visualize predictions of each type of model including 95% confidence bands. First I had to make a new data set for prediction. I could have compared fitted values…