Do you really need a multilevel model? A preview of powerlmm 0.4.0
In this post I will show some of the new simulation features that will be available in powerlmm 0.4.0 . You can already install the dev…
View ArticleEstimating treatment effects and ICCs from (G)LMMs on the observed scale...
When a multilevel model includes either a non-linear transformation (such as the log-transformation) of the response variable, or of the…
View ArticleNew paper: The consequences of ignoring therapist effects in longitudinal...
We just published a paper, The consequences of ignoring therapist effects in trials with longitudinal data: A simulation study , where we…
View ArticleChange over time is not "treatment response"
This will be a non-technical post illustrating the problems with identifying treatment responders or non-responders using inappropriate…
View ArticleMediation, confounding, and measurement error
Mediation might be the ultimate example of how a method continues to be used despite a vast number of papers and textbooks describing the…
View ArticleHeterogeneous treatment effects and homogeneous outcome variances
Recently there has been a couple of meta-analyses investigating heterogeneous treatment effects by analyzing the ratio of the outcome…
View ArticleWhy linear mixed-effects models are probably not the solution to your missing...
Linear mixed-effects models are often used for their ability to handle missing data using maximum likelihood estimation. In this post I will…
View ArticleThe Cohen's d app translation project
My Cohen's d page support multiple languages, any help with translation the contents into more languages is very welcome. The contents…
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