I really appreciate everything you all are doing with the jamovi package, and thank you so much for everything you all have done so far.
With that said, I have a few suggestions that would really help the repeated measures anova function. Overall, this function works really well, but I do have a few suggestions.
1) Output for descriptives statistics (i.e. mean and standard deviation at each level and ability to collapse across conditions). Example from a 2-way (within-within) repeated measures ANOVA below.
2) In the post-hocs right now the pooled standard deviation is used. I don't think this inflates the error rate (I haven't look too deep into the literature), but I do not think this a recommended procedure https://www.researchgate.net/post/How_d ... ts_factors
3) Is there anyway you could add the option of having the multivariate output for repeated measures? In many cases, when the sample size is large enough, this procedure is preferred because you do not need to meet the assumption of sphericity.
4) Another analysis of interest would be trend (orthogonal polynomial) analysis. I don't use it often, but it has been of greater interest lately.
5) Also, sometimes I have a few pre-planned contrasts of interest rather than pairwise comparisons. I typically use SAS for this, and the example code is below.
Code: Select all
Title "Low PWV Standing";
proc glm data=WORK.Stif1 ;
model LowStandStand Low1hrStand Low2hrStand
LowStandWalk Low1hrWalk Low2hrWalk = / nouni effectsize;
repeated trial 2, time 3 / MEAN nom;
manova h=intercept m =
0.5*LowStandStand + 0.5*LowStandWalk - 0.5*Low1hrStand - 0.5*Low1hrWalk,
0.5*LowStandStand + 0.5*LowStandWalk - 0.5*Low2hrStand - 0.5*Low2hrWalk
prefix=diff /summary;
run;
quit;
If there is anyway I can help get this implemented I'm more than willing to help!