[R-meta] Testing multicollinearity between categorical predictors
Dear Rafael, I don't know what "testing" for multicollinearity would entail. One could examine the variance inflation factors with vif(). What VIF values are considered "large" is debatable though. Best, Wolfgang
-----Original Message----- From: Rafael Rios [mailto:biorafaelrm at gmail.com] Sent: Wednesday, 17 June, 2020 2:28 To: Viechtbauer, Wolfgang (SP); r-sig-meta-analysis at r-project.org Subject: Testing multicollinearity between categorical predictors Dear Wolfgang and All, Is there a good method for testing multicollinearity between categorical predictors in meta-regression? I ran a mixed-effects MLMA using two categorical predictors and their interaction as moderators, but a Referee requested a test of multicollinearity. I did not find a good approach to solve this problem. Thank you in advance. Best wishes,
_______________________________________________________ Prof. Dr. Rafael Rios Moura sciencia amabilis Coordenador de Pesquisa e do NEPEE/CNPq Laborat?rio de Ecologia e Zoologia (LEZ) UEMG - Unidade Ituiutaba ORCID:?http://orcid.org/0000-0002-7911-4734 Curr?culo Lattes: http://lattes.cnpq.br/4264357546465157 Research Gate: https://www.researchgate.net/profile/Rafael_Rios_Moura2 Rios de Ci?ncia:?https://www.youtube.com/channel/UCu2186wIJKji22ai8tvlUfg