help
help > RE: ANCOVA rank deficient
Aug 20, 2016 05:08 AM | Juan Pablo Princich - Neurociencias Hospital El Cruce, Buenos Aires
RE: ANCOVA rank deficient
Dear Andrew and Giulia
Thanks for the example , it is very useful.
Still have two questions maybe not related to NBS but to statistics in general that you could please kindly acknowledge...
1. under this ancova example , do we need to perform a multiple comparison correction if we perform any additional ttest on the same matrices but with a different group definition ? in other words i found a significant network with this design but also want to look for differences re-arranging a sub group distribution according to clinical properties.. lets say i split the patients group in two and compare them with individual t test using the same design agaisnt all the controls.
2. is there a way to define a contrast that only shows the effect of covariates alone? (not accounting for the groups differences) or shall i modify the design matrix ?
Thanks for your patience and grateful help!
sincerely, Juan P
Thanks for the example , it is very useful.
Still have two questions maybe not related to NBS but to statistics in general that you could please kindly acknowledge...
1. under this ancova example , do we need to perform a multiple comparison correction if we perform any additional ttest on the same matrices but with a different group definition ? in other words i found a significant network with this design but also want to look for differences re-arranging a sub group distribution according to clinical properties.. lets say i split the patients group in two and compare them with individual t test using the same design agaisnt all the controls.
2. is there a way to define a contrast that only shows the effect of covariates alone? (not accounting for the groups differences) or shall i modify the design matrix ?
Thanks for your patience and grateful help!
sincerely, Juan P
Threaded View
Title | Author | Date |
---|---|---|
Giulia Forcellini | May 11, 2016 | |
Andrew Zalesky | May 12, 2016 | |
Ru-Kai Chen | Sep 1, 2024 | |
Andrew Zalesky | Sep 1, 2024 | |
Ru-Kai Chen | Sep 1, 2024 | |
Andrew Zalesky | 15 hours ago | |
Juan Pablo Princich | Dec 7, 2017 | |
Andrew Zalesky | Dec 7, 2017 | |
Juan Pablo Princich | Dec 13, 2017 | |
Juan Pablo Princich | Dec 18, 2017 | |
Juan Pablo Princich | Aug 20, 2016 | |
Andrew Zalesky | Aug 22, 2016 | |