All Questions
4 questions
1
vote
0
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44
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Mixed model development for repeated measures over 3 years
I have longitudinal data for multiple plant varieties, where plants were measured for their Performance at 10 time points (time) each year for 3 years.
Each variety (genotype) serves as a distinct ...
- 11
2
votes
1
answer
74
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Repeated within family measurements in an lmer
I'm trying to model in R, how lizard head size (Continuous) can be predicted by mass (Continuous), hatch time (Factor: Early vs Late), and Clutch mass (Continuous), with Family as a random factor. An ...
- 21
0
votes
0
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34
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Correct model formula to account for crossed and nested simultaneously?
I set some models to test some specific contrasts. But I'm not sure which will correctly address the repeated measurements over my individuals.
The dataset has:
id = subject id, factor with 83 levels
...
- 175
6
votes
1
answer
2k
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How to properly perform "change from baseline" (pre-post) analysis adjusting for pre using lme4 in R?
Let's assume I have the following data set, consisting of pre (t1) and post (t2) measurements. I want to check, if there is a significant effect over time (t1, t2).
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- 347