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2 votes
1 answer
734 views

How to obtain contrasts for constrained longitudinal data analysis?

I would like to apply a constrained longitudinal data analysis (cLDA) with a linear response variable of the form, y ~ Time + Treatment:Time + (1 | ID). I am using &...
HNSKD's user avatar
  • 227
1 vote
0 answers
37 views

Experiment with two within-subjects and one between-subject with linear mixed models?

I need to analyze one dataset that contain two variables measured in the same subject and one across subjects. The variables are: id = subject id, factor with 83 levels tissue = factor with 2 levels (...
BioLeal's user avatar
  • 175
1 vote
1 answer
2k views

Within-subjects contrasts in repeated measures anova with unbalanced design [closed]

I would like to reproduce the standard output of a repeated measures anova in SPSS with R. For a balanced design (i.e. equal group sizes) I can exactly reproduce the SPSS output of the within-subjects ...
Steve's user avatar
  • 33
3 votes
1 answer
6k views

Specifying contrasts for lme in 3x3 repeated-measures design

I would like to test the effects of two categorical variables, each with 3 levels, on some continuous data. Three groups of participants completed the same task for 3 types of stimuli, so it's a 3x3 ...
Laura's user avatar
  • 33
8 votes
3 answers
2k views

How to examine interactions between factor and covariate in a mixed effects model?

I have 2 factors A and B (5×3) and one covariate X in a within subject design. Here's ...
Wynn's user avatar
  • 283