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.

Jamie Quinn
  • Female
  • Tallahassee, FL
  • United States
Share on Facebook Share on Facebook Share

Jamie Quinn's Groups

Gifts Received

Gift

Jamie Quinn has not received any gifts yet

Give a Gift

 

Jamie Quinn's Page

Latest Activity

Mike Cheung replied to Jamie Quinn's discussion Missing data in correlation matrices in the group Meta-analytic structural equation modeling
"Hi Jamie. Are you using a fixed- or random-effects model? A complete study is only required in the fixed-effects model. My guess is that there is not enough studies in the subset of your data. Regards,Mike"
Oct 26, 2015
Jamie Quinn added a discussion to the group Meta-analytic structural equation modeling
Thumbnail

Missing data in correlation matrices

Good afternoon,I am consulting this discussion board in regards to an error in R when running the first stage of the TSSEM approach on a subset of 6x6 matrices from a larger set. I get the following error:Error in solve.default(mxFit@output$calculatedHessian) : Lapack routine dgesv: system is exactly singular: U[1,1] = 0I have checked my matrices and none of them are non-positive definite or singular. Also, running the TSSEM1 on the full set of matrices resulted in model convergence and an…See More
Oct 26, 2015
Mike Cheung replied to Jamie Quinn's discussion Large matrices in MetaSEM in the group Meta-analytic structural equation modeling
"Hi, Jamie. Would you mind posting the data, and R code here? If it is not appropriate to publicly post your data, could you please send them to my email? Cheers, Mike"
Sep 1, 2015
Jamie Quinn replied to Jamie Quinn's discussion Large matrices in MetaSEM in the group Meta-analytic structural equation modeling
"Hi Dr. Cheung, thank you for your response. I have installed the latest version of OpenMx and metaSEM, and have tried adding the model.name statement to my syntax. I am still getting the OpenMx Status 6 error.  However, I attempted to do a…"
Sep 1, 2015
Mike Cheung replied to Jamie Quinn's discussion Large matrices in MetaSEM in the group Meta-analytic structural equation modeling
"Hi Jamie, Are you using OpenMx 2.2.6? If yes, you may try to see if it helps by including a simple character in the model.name argument. For example, library(metaSEM)fit.error <- tssem1(Becker09$data, Becker09$n, method="REM",…"
Aug 19, 2015
Jamie Quinn added a discussion to the group Meta-analytic structural equation modeling
Thumbnail

Large matrices in MetaSEM

Hi Dr. Cheung and others,I am attempting to fit a MASEM using the two-stage approach in R with metaSEM. I have 176 correlation matrices (10x10) with varying degrees of missingness, but almost all matrices (except 2) are missing at least 1 or more variables. My attempts to fit the first stage using tssem1 produced questionable results. The OpenMx status is 6 after a model using RE.type='Diag' is run, and the heterogeneity statistics for all intercepts are well over .95 (except one, I2=…See More
Aug 19, 2015
Jamie Quinn updated their profile
Aug 5, 2015
Jamie Quinn replied to Jamie Quinn's discussion MASEM in Mplus in the group Meta-analytic structural equation modeling
"Thank you for your reply! I will learn the second step in TSSEM and conduct it in R instead. Thank you! Sincerely,Jamie"
May 15, 2015
Mike Cheung replied to Jamie Quinn's discussion MASEM in Mplus in the group Meta-analytic structural equation modeling
"Hi Jamie, It is not advisable to use Mplus or other SEM packages to analyze the pooled correlation matrix. In your example, the sample sizes vary from 36 to >13,000. If one sample size is used, say the harmonic mean with 5,000, the sample sizes…"
May 14, 2015
Jamie Quinn added a discussion to the group Meta-analytic structural equation modeling
Thumbnail

MASEM in Mplus

Hi Dr. Cheung (and all), I've really enjoyed reading your new book on meta-analytic SEM!I am interested in running a meta-analysis on correlation matrices using the multivariate approach. I know one method is to do TSSEM using R, but my expertise lies in the usage of Mplus. My questions are: 1. Can I read the pooled correlation matrix calculated from the first step of TSSEM into Mplus as a summary data file? As in, is it advisable to do this?2. If this is possible, what sample size should I use…See More
May 14, 2015
Jamie Quinn posted a status
"Component skills of reading comprehension and oral language"
May 14, 2015
Jamie Quinn joined Mike Cheung's group
Thumbnail

Meta-analytic structural equation modeling

A technique to synthesizing correlation/covariance matrices for the purpose of fitting structural equation models.
May 14, 2015
Jamie Quinn is now a member of Meta-Analysis Resources
May 14, 2015

Profile Information

Comment Wall

You need to be a member of Meta-Analysis Resources to add comments!

Join Meta-Analysis Resources

  • No comments yet!
 
 
 

© 2017   Created by Blair T. Johnson.   Powered by

Badges  |  Report an Issue  |  Terms of Service