help > RE: 2x3 Mixed Design ANOVA
Oct 12, 2018  06:10 AM | Ana Coelho
RE: 2x3 Mixed Design ANOVA
Once again, thank you for your answer Dr. Zalesky!

Just to clarify some things if I want to evaluate the linear increase: time1 < time2 < time3 and also taking into account that we have 2 groups (good performers vs. poor performers) then my design matrix for an example with 4 subjects will be something like this:

1 1 0 0 0 0 0 1 0 0 0 
1 0 2 0 0 0 0 1 0 0 0
1 0 0 4 0 0 0 1 0 0 0 
1 1 0 0 0 0 0 0 1 0 0
1 0 2 0 0 0 0 0 1 0 0
1 0 0 4 0 0 0 0 1 0 0
1 0 0 0 1 0 0 0 0 1 0
1 0 0 0 0 2 0 0 0 1 0
1 0 0 0 0 0 4 0 0 1 0
1 0 0 0 1 0 0 0 0 0 1
1 0 0 0 0 2 0 0 0 0 1
1 0 0 0 0 0 4 0 0 0 1

where columns 2 to 4 model time for group1 and columns 5 to 7 model time for group2. The last 4 columns model each subject.
The contrast for linear increase in the group 1 will be: [0 -1 0 1 0 ...] Is this contrast correct? Because you mentioned that contrasts will be [0 1 0 0...] for t1 > t2 > t3 and [0 -1 0 0...] for t1 < t2 < t3, but I don't get it how this reflects the linear increase.


Thanks in advance!
Best regards,
Ana

Threaded View

TitleAuthorDate
Ana Coelho Oct 10, 2018
Andrew Zalesky Oct 10, 2018
Ana Coelho Oct 11, 2018
Andrew Zalesky Oct 11, 2018
RE: 2x3 Mixed Design ANOVA
Ana Coelho Oct 12, 2018
Andrew Zalesky Oct 15, 2018
Ana Coelho Oct 15, 2018
Andrew Zalesky Oct 15, 2018
Ana Coelho Oct 18, 2018
Andrew Zalesky Oct 18, 2018
Ana Coelho Mar 12, 2019
Andrew Zalesky Mar 13, 2019
Ana Coelho Mar 13, 2019
Ana Coelho Oct 19, 2018
Ana Coelho Oct 22, 2018
Andrew Zalesky Oct 22, 2018
Ana Coelho Oct 25, 2018
Andrew Zalesky Oct 25, 2018
Ana Coelho Oct 26, 2018
Andrew Zalesky Oct 26, 2018