Third Party Software
Dabiriyan
Joined: 09/30/2019
Moderator analyses in OSMASEM
Dear Mike & colleagues,
I conducted moderator analyses with OSMASEM with several moderators. When I performed OSMASEM with these moderators simultaneously and separately, it showed different estimates for moderators. Which one should be preferred?
I attached R-code and data.
Thanks for your time and patience.
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Leo
Joined: 01/09/2020
ACE latent growth modeling
Hello.
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canavati
Joined: 12/01/2018
Problem Fitting SEM model with Reflective Latent Construct
I am trying to fit a MASEM model where:
- "index" is a reflective latent construct with five indicators (WE, IE, FK, EE, & NVI)
- "OB3" is a variable that is predicted by index
- "OB1" is a variable that is predicted by OB3, such that the effect of "index" on OB1 is fully mediated by OB3
The graphical representation of the model I'm trying to run is in the attached Rplot
noamm
Joined: 10/10/2018
Genetic correlations that doesn't make sense
Hi, I'm trying to estimate a multivariate ACE model. I started by checking a correlated factors solution (umxACEv), but there are some correlations that just can't be real (e.g., 2.02).
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lior abramson
Joined: 07/21/2017
robust standard errors and CIs using umx
Dear umx Experts,
I ran an ADE Cholesky model with 4 variables. When trying to obtain CIs for the one-headed paths (using the command umxConfint), I got weird CIs and the note "alpha level not reached" near some of the CIs. After consultation in the behavioral genetics forum, I understood that this the result of an optimization problem.
AdminRobK suggested that instead of looking at the CIs, I will try to get robust standard errors, then use mxSE() to get standard errors for the elements and form a CI from those standard errors
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MarieF
Joined: 04/21/2020
smdMTS function, metaSEM
Dear Mike and colleagues,
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Srikanth
Joined: 12/28/2016
Df Difference in TSSEM
Hi Mike and colleagues,
I am trying to estimate a TSSEM model and then test the moderating effect. I am following the wonderful resources provided by you and your team. However, when I compare the constrained and unconstrained models, the difference in degrees of freedom is higher than expected.
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Xin Lin
Joined: 06/10/2019
Do we need to avoid a saturated model?
Dear Dr. Cheung,
I used Lavaan to specify my model. Do I need to declare the correlations among the mediator variables besides the correlations among the independent variables?
After adding all paths to the model, I got a perfect fit model, which will be of little use statistically.
Thanks,
Xin
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Xin Lin
Joined: 06/10/2019
Control Covariates in metaSEM
Hi all,
Can we control covariates (i.e., age, SES, problem type) in metaSEM? To be more specific, can I add them directly to the model like regression?
Thank you!
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aexwtt
Joined: 03/05/2020
Inquiry about handling missing data with moderators of more than three categories~
Dear Mike,
This is Wen-Ta from Department of Applied Foreign Languages, National Taiwan University of Science & Technology.
I am very interested in meta-analysis and now applying your metaSEM package to my research project.
May I possibly ask a question about handling missing data with moderators of more than tree categories: