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Hi Jean, The ANCOVA setup is similar to this example: https://fsl.fmrib.ox.ac.uk/fsl/fslwiki/GLM#F-Tests_.28Inter-Group_differences.2C_no_repeated_measures.29 , except that you have the nuisance variables. In the 'GLM setup' (Higher-level analysis) you'll have 3 t-contrasts that look like this: EV1 EV2 EV3 EV4 EV5 high low NC age sex 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 After setting the GLM to have 1 F-test, you should select these 3 contrasts (C1-C3) in the boxes with F1 (like in the link above). Best, Bianca Em ter, 1 de out de 2019 às 00:40, Jean Kim <[log in to unmask]> escreveu: > Dear Bianca, > > Thank you for your kind response! I now do get it how to create GLM model! > > Though I want to add some info about my study; I am using DTI and trying > to do TBSS analysis. > So I am using 'GLM setup' in FSL , but still I can use your advice on > there! > > Now, I have another question about how to create contrasts. > As I said, I already did three group t-test (high vs low ; low vs NC; high > vs NC). > And I want to see ANCOVA, instead of separate three t -test.! > > Thank you in advance. > > More comments would be welcomed and be helpful! > > ######################################################################## > > To unsubscribe from the FSL list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1 > ######################################################################## To unsubscribe from the FSL list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1