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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JW
May 17, 2021 05:07PM
Dear AFNI experts,

I used the below script to run a one-sample t-test.

3dttest++ \
-prefix results \
-covariates Covariate.txt \
-center SAME \
-mask /Volumes/GM_mask/GMmask+tlrc \
-clustsim \
-setA A \
subj1 /Volumes/subj1/Proc_results/nbm_final_r2z+tlrc \
subj2 /Volumes/subj2/Proc_results/nbm_final_r2z+tlrc \
subj3 /Volumes/subj3/Proc_results/nbm_final_r2z+tlrc \
subj4 /Volumes/subj4/Proc_results/nbm_final_r2z+tlrc \
subj5 /Volumes/subj5/Proc_results/nbm_final_r2z+tlrc \
sub6 /Volumes/subj6/Proc_results/nbm_final_r2z+tlrc \
.
.
.
.
subj180 /Volumes/subj180/Proc_results/nbm_final_r2z+tlrc \

There were three covariates (age, sex, and years of education) and the ouput dataset looks like below.
#0 A_mean
#1 A_Zscr
#2 A_age
#3 A_age_Zscr
#4 A_sex
#5 A_sex_Zscr
#6 A_education
#7 A_education_Zscr

I'd like to see the one-sample t-test result after controlling for all the covariates, not each covariate, but according to the 3dttest++ page, #0 is a difference of means with covariates removed. Could you please let me know if there is any way that I can get the one-sample t-test result after controlling all three covariates?

Best,
JW



Edited 1 time(s). Last edit at 06/02/2021 02:49AM by JW.
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Subject Author Posted

3dttest One Sample t-test

JW May 17, 2021 05:07PM