Hi,
It’s a standard Cohen’s d calculation -- mean of the individual subject (lev2)
copes, divided by the std of the individual subject copes
In terms of FSL code, if $mergedcope is the 4D file containing all the
individual subject cope estimates, the code is just:
fslmaths $mergedcope -Tmean ${mergedcope}_mean
fslmaths $mergedcope -Tstd -div ${mergedcope}_mean -recip cohensd
cheers,
-MH
--
Michael Harms, Ph.D.
-----------------------------------------------------------
Conte Center for the Neuroscience of Mental Disorders
Washington University School of Medicine
Department of Psychiatry, Box 8134
660 South Euclid Ave. Tel: 314-747-6173
St. Louis, MO 63110 Email:
[email protected]
From: <[email protected]> on behalf of 王潇潇
<[email protected]>
Date: Tuesday, November 21, 2017 at 7:50 PM
To: hcp-users <[email protected]>
Subject: [HCP-Users] How does the HCP calculate the Cohen d effect in S1200
GroupAvg results?
Dear HCP users
I've downloaded the S1200 GroupAvg results from the HCP website, and looked up
the 7-task Cohen d effect results.
Could anyone tell me how the Cohen d effect was calculated?
Was it calculated by Cohen t-test d effect size of the beta value of GLM to
each task?
Thanks, ~^_^~
------------------
Wang, Xiaoxiao
Biomedical Engineering Center
University of Science & Technology of China
Hefei, Anhui 230027, P.R.China
Email: [email protected]<mailto:[email protected]>
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