Meta-Analysis Resources

Tools for Those Who Summarize the Evidence Base

Resources and networking for those who conduct or interpret meta-analyses related to any phenomenon that is gauged in multiple studies.

James Lee
  • Seoul
  • Korea, Republic of
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James Lee replied to Lauren D'Innocenzo's discussion Multi-level Meta-Analysis
" Dear. Wim   I like to use the code you mentioned above. but i am not sure whether my data is fit for the analysis. Could you allow me any example file that i can practice with?"
Dec 21, 2013
Mike Cheung replied to James Lee's discussion Positive Definite problem with a MASEM approach in the group Meta-analytic structural equation modeling
"Dear James, The error message seems to suggest that the input correlation matrices are non-positive definite. It is hard to help without knowing what the actual data are. Could you post the sample data? For…"
Nov 12, 2013
James Lee added a discussion to the group Meta-analytic structural equation modeling
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Positive Definite problem with a MASEM approach

specification : R.3.14 32bit   My data is described below.  Warning sign pops up like "X is not positive definite!"   I thought, the Data I am dealing with is problematic.   In my guess, Missing values have to do with a positive definite problem.   Here is my question.     I would like to conduct a meta-path analysis in order to figure out a kind of structural relationship among variables.  However, due to the characteristics of my data, I thought,maybe, I can't help but changing my method from…See More
Nov 11, 2013
James Lee and Neli are now friends
Nov 11, 2013
James Lee joined Mike Cheung's group
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Meta-analytic structural equation modeling

A technique to synthesizing correlation/covariance matrices for the purpose of fitting structural equation models.
Nov 11, 2013
James Lee is now a member of Meta-Analysis Resources
Jun 20, 2013

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