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help > RE: How to define "site" as covariate
Nov 8, 2017 05:11 PM | Ekaterina Pechenkova
RE: How to define "site" as covariate
Hi Julia,
thank you very much for sharing!
But anyway would be great to know how one would proper specify in Conn the categorical covariates with more than two categories and whether one needs to demean the QA variables by hand or not.
Kind regards,
Ekaterina.
Originally posted by Julia Werhahn:
thank you very much for sharing!
But anyway would be great to know how one would proper specify in Conn the categorical covariates with more than two categories and whether one needs to demean the QA variables by hand or not.
Kind regards,
Ekaterina.
Originally posted by Julia Werhahn:
Hi Conners, dear Alfonso
I just found a post by Alfonso regarding my question.
It is from february 20th, 2017 (citation): "Regarding QA_GCOR that is an automatic Quality Assurance covariate computed during the Denoising step. It represents the average global correlation (GCOR) for each subject and each condition (i.e. the center of the voxel-to-voxel histograms that are displayed in the Denoising tab) which has been proposed/used in several studies as a control covariate when comparing groups of subjects across different sites, or when needing additional control for potential noise/artifactual effects on your connectivity measures."
Thanks a lot, Alfonso, this helped!
Kind regards
Julia
I just found a post by Alfonso regarding my question.
It is from february 20th, 2017 (citation): "Regarding QA_GCOR that is an automatic Quality Assurance covariate computed during the Denoising step. It represents the average global correlation (GCOR) for each subject and each condition (i.e. the center of the voxel-to-voxel histograms that are displayed in the Denoising tab) which has been proposed/used in several studies as a control covariate when comparing groups of subjects across different sites, or when needing additional control for potential noise/artifactual effects on your connectivity measures."
Thanks a lot, Alfonso, this helped!
Kind regards
Julia
Threaded View
| Title | Author | Date |
|---|---|---|
| Julia Werhahn | Nov 6, 2017 | |
| Julia Werhahn | Nov 8, 2017 | |
| Ali Amad | Dec 14, 2017 | |
| Zahra Moradimanesh | Oct 31, 2020 | |
| Till Langhammer | Jan 18, 2021 | |
| Alfonso Nieto-Castanon | Jan 18, 2021 | |
| max345 | Jul 5, 2023 | |
| Alfonso Nieto-Castanon | Jul 5, 2023 | |
| Alex G | Dec 7, 2022 | |
| Alfonso Nieto-Castanon | Dec 23, 2022 | |
| Nancy Mugisha | Mar 2, 2022 | |
| Alfonso Nieto-Castanon | Mar 10, 2022 | |
| Dilip Kumar | Jun 25, 2021 | |
| Victoria Okuneye | Jun 27, 2018 | |
| Ekaterina Pechenkova | Nov 8, 2017 | |
| Ekaterina Pechenkova | Nov 6, 2017 | |