metaSEM
sharmel
Joined: 07/31/2023
The goal of moderator analysis in metaSEM::wls()
My understanding is that moderator analysis at the 2nd stage of metaSEM approach using `metaSEM::wls()` involves multi-group analysis.
Thus, as a user I have to `subset` my data by categories of my moderator, and fit the **same model syntax** to each subset as shown below.
brendan
Joined: 09/21/2023
Is osmasem3 in the github version of metaSEM?
Are the osmasem3L functions still available in the github repository?
I can see the functions were removed(?) in the most recent commit.
(If they are available, I respect that they are still in development)
Regards
brendan
Joined: 09/21/2023
MetaSEM with odds ratios
I assume that to do this, my next step is to convert the odds ratios to r values?
Can someone point me in the direction of what I need to do next to generate the required correlation matrix?
Thankyou in advance
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Jimxxxx
Joined: 08/26/2023
OSMASEM Interaction between Moderators
I attempted to include an interaction term and other moderators in a path model.
However, it produced unusual estimates and the following message: "The model does not satisfy the first-order optimality conditions to the required accuracy, and no improved point for the merit function could be found during the final linesearch (Mx status RED)."
Could you please provide me with some suggestions?
I have attached the R code and the dataset.
Thanks for your time and patience.
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nguyennghia130…
Joined: 07/27/2023
Perfect fit
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Xijian Zheng
Joined: 06/10/2023
The tssem1 runs very slowly. tssem1 does not work when using a random effects model
Dear Dr. Cheung,
Hello, recently I want to use TSSEM to determine the structure of a scale. I am pooling 30 correlation matrices of size 38x38 using the 'tssem1' function. However, tssem1 runs quite slowly, taking at least 6 hours for each computation.
Do you have any suggestions to make it run faster?
j.aitken
Joined: 06/30/2021
Multivariate vs. Multilevel Meta-Analysis
I am reaching out with a question about the appropriateness of a multivariate vs. multilevel meta-analytic model for some data that I am collecting.
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wang2022
Joined: 11/26/2022
Help deal with an error message: "1:(rsum * csum) : NA/NaN argument"
I hope everyone is staying safe and having a wonderful holiday season!
We are currently conducting an metaSEM with a massive dataset: 1008 studies/matrices with 12 variables. Admittedly, there are quite many missing values in the dataset. However, we make sure that each cell has at least 10 data points from the primary studies (see “study counts5” in the attachment).
Srikanth
Joined: 12/28/2016
TSSEM Setup Model Comparison With Different Constructs in Each Model
Greetings! I hope you are well.
I am working on a TSSEM project where the study aims to compare three competing models and pick the “best” model. I have attached a file titled _Figure Model 1,2,&3.png_ to illustrate the three models. I am writing this post to run through my analyses and ask a few questions regarding the same. It would be of immense help if you could please throw some light.
mjus
Joined: 04/17/2021
Inclusion of Control Variables in Multiple Mediation Analysis - OSMASEM
first of all I would like to thank all active members of the forum and of course especially Prof. Cheung for the numerous help and forum entries. The many practical examples and many resources here on the forum are a wonderful source of knowledge and facilitate one's own research immensely.