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35 votes
3 answers
53k views

How to get an "overall" p-value and effect size for a categorical factor in a mixed model (lme4)?

I would like to get a p-value and an effect size of an independent categorical variable (with several levels) -- that is "overall" and not for each level separately, as is the normal output from ...
user3288202's user avatar
  • 1,345
15 votes
1 answer
16k views

Conflicting results of summary() and anova() for a mixed model with interactions in lmer+lmerTest

I recently came across what I think may be a problem in how the anova() function from the lmerTest packages computes its F-...
James S.'s user avatar
  • 451
5 votes
1 answer
555 views

Paired and repeated measures! Now what? ANOVA or mixed model?

I have a simple setup. I have 10 patients and I would like to test the effect of a certain drug on kidney function. Each patient will serve as his own control and intervention. First for the control ...
teeniv's user avatar
  • 85
2 votes
0 answers
2k views

Satterthwaite degrees of freedom in lmerTest for a 3x2x2 mixed model vs. mixed ANOVA dfs

I have traditionally been running my analyses using aov and would like to switch to lmer. My questions is whether or not this is ...
mat's user avatar
  • 613