AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

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Lauren Lebois
April 09, 2020 09:20AM
Hi AFNI Gurus,

After running a 3dMVM analysis, the output ended with the following: 

Congratulations! You have got an output ANCOVA-Faces-DES-only+tlrc.

Warning message:
Numerical variables NOT centered on 0 (i.e., likely bogus results): Age, WK2_DESB_RS

However, I set up my script to mean center the quantitative variables - that is the values provided in the "-qVarCenters" option are the averages of the Age and W2_DESB_RS variables, respectively: 

	3dMVM -prefix ANCOVA-DES-only -jobs 4                                				\
		-bsVars  "Site*Sex+Age+WK2_DESB_RS"                 	\
		-wsVars "Face"                                                  					\
		-qVars "Age,WK2_DESB_RS"                           	\
		-qVarCenters '34.66,1.36'          		                        		\
		-SS_type 3                                                       					\
		-GES																				\
		-resid Residuals																	\
		-num_glt 12                                                       					\
		-gltLabel 1 'Fear' -gltCode 1 'Face : 1*Fear'    									\
		-gltLabel 2 'Neut' -gltCode 2 'Face : 1*Neutral'    								\
		-gltLabel 3 'Fear-Neut' -gltCode 3 'Face : 1*Fear -1*Neutral'    					\
		-gltLabel 4 'Fear-DES' -gltCode 4 'Face : 1*Fear WK2_DESB_RS : '   		 			\
		-gltLabel 5 'Fear-DES-H' -gltCode 5 'Face : 1*Fear WK2_DESB_RS : 5.24'   		 	\
		-gltLabel 6 'Fear-DES-L' -gltCode 6 'Face : 1*Fear WK2_DESB_RS : 0.00'   		 	\
		-gltLabel 7 'Neut-DES' -gltCode 7 'Face : 1*Neutral WK2_DESB_RS : '   		 		\
		-gltLabel 8 'Neut-DES-H' -gltCode 8 'Face : 1*Neutral WK2_DESB_RS : 5.24'   		\
		-gltLabel 9 'Neut-DES-L' -gltCode 9 'Face : 1*Neutral WK2_DESB_RS : 0.00'   		\
		-gltLabel 10 'F-N-DES' -gltCode 10 'Face : 1*Fear -1*Neutral WK2_DESB_RS :'   		\
		-gltLabel 11 'F-N-DES-H' -gltCode 11 'Face : 1*Fear -1*Neutral WK2_DESB_RS : 5.24'	\
		-gltLabel 12 'F-N-DES-L' -gltCode 12 'Face : 1*Fear -1*Neutral WK2_DESB_RS : 0.00'	\
		-dataTable @Faces_Table_MVM-DES-only.txt

Given this, what could cause this warning and how should it be addressed?

Thanks for your time and assistance.
Best,
Lauren
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Subject Author Posted

3dMVM bogus results error

Lauren Lebois April 09, 2020 09:20AM

Re: 3dMVM bogus results error

gang April 09, 2020 02:15PM

Re: 3dMVM bogus results error

Lauren Lebois April 09, 2020 05:37PM