Dear Dr. Radua,

In your method, you used Hedge's d (or g*). You mentioned to look at your papers for how the T values were converted to Hedge's d and its variance. However, I can not find it in your papers.

Could you kindly point me the formulas to calculate Hedge's d (or g*) and its variance.

Furthermore, to combining across studies, did you use DerSimonian and Laird approach?

Thanks,

Chao-Gan

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Chao-Gan YAN, Ph.D.
Principal Investigator
Deputy Director, Magnetic Resonance Imaging Research Center
Institute of Psychology, Chinese Academy of Sciences
16 Lincui Road, Chaoyang District, Beijing 100101, China
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Initiator
DPABI, DPARSF, PRN and The R-fMRI Network (RFMRI.ORG)
http://rfmri.org/yan
http://scholar.google.com/citations?user...