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Jiaxu Han
July 16, 2021 07:07PM
Dear AFNI experts,

I am running a paired t-test using 3dttest++ function, but for some reason, it automatically generates z score sub-bricks instead of t stats. From the -help file, it seems that this would occur only if I specify "-toz" option ("* If option '-toz' is used, the 'Tstat' will be replaced with 'Zscr' in the statistical sub-brick labels."), but I didn't use that in my code.

I wonder if there is anything wrong with my code and if not, what is the difference between using the z score threshold vs. using the t stat threshold here to explore my results.

Thanks in advance!

Here are the sub-brick labels that I got:
SetA-SetB_mean
SetA-SetB_Zscr
SetA-SetB_age
SetA-SetB_age_Zscr
SetA_mean
SetA_Zscr
SetA_age
SetA_age_Zscr
SetB_mean
SetB_Zscr
SetB_age
SetB_age_Zscr

Here is my code:

3dttest++ -prefix HvP30 -paired -clustsim -setA 501-3_reho_norm+tlrc. 535-1_reho_norm+tlrc. 539-1_reho_norm+tlrc. 549-2_reho_norm+tlrc. 551-3_reho_norm+tlrc. 559-2_reho_norm+tlrc. 561-1_reho_norm+tlrc. 565-1_reho_norm+tlrc. 567-1_reho_norm+tlrc. 573-3_reho_norm+tlrc. 575-1_reho_norm+tlrc. 579-2_reho_norm+tlrc. 585-1_reho_norm+tlrc. 587-1_reho_norm+tlrc. 589-2_reho_norm+tlrc. 595-2_reho_norm+tlrc. 597-3_reho_norm+tlrc. 607-1_reho_norm+tlrc. 611-1_reho_norm+tlrc. 625-3_reho_norm+tlrc. 627-2_reho_norm+tlrc. 629-1_reho_norm+tlrc. 630-2_reho_norm+tlrc. 631-2_reho_norm+tlrc. 633-3_reho_norm+tlrc. 523-2_reho_norm+tlrc. 541-3_reho_norm+tlrc. 615-1_reho_norm+tlrc. 617-2_reho_norm+tlrc. 621-2_reho_norm+tlrc. -setB 501-1_reho_norm+tlrc. 535-3_reho_norm+tlrc. 539-3_reho_norm+tlrc. 549-1_reho_norm+tlrc. 551-1_reho_norm+tlrc. 559-1_reho_norm+tlrc. 561-2_reho_norm+tlrc. 565-3_reho_norm+tlrc. 567-2_reho_norm+tlrc. 573-1_reho_norm+tlrc. 575-2_reho_norm+tlrc. 579-3_reho_norm+tlrc. 585-2_reho_norm+tlrc. 587-3_reho_norm+tlrc. 589-1_reho_norm+tlrc. 595-1_reho_norm+tlrc. 597-1_reho_norm+tlrc. 607-3_reho_norm+tlrc. 611-3_reho_norm+tlrc. 625-1_reho_norm+tlrc. 627-3_reho_norm+tlrc. 629-2_reho_norm+tlrc. 630-3_reho_norm+tlrc. 631-3_reho_norm+tlrc. 633-1_reho_norm+tlrc. 523-3_reho_norm+tlrc. 541-2_reho_norm+tlrc. 615-2_reho_norm+tlrc. 617-1_reho_norm+tlrc. 621-1_reho_norm+tlrc. -covariates CovFile.txt

-Jiaxu



Edited 2 time(s). Last edit at 07/16/2021 07:08PM by hanjiaxu.
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Subject Author Posted

3dttest++ generates z score sub_bricks instead of T stat

Jiaxu Han July 16, 2021 07:07PM

Re: 3dttest++ generates z score sub_bricks instead of T stat

rick reynolds July 17, 2021 12:32AM

Re: 3dttest++ generates z score sub_bricks instead of T stat

Jiaxu Han July 17, 2021 02:19PM