OpenMx Help
IvanVoronin
Joined: 08/18/2013
Mixed effects model - matrix specification
Hello,
I am looking for advice with regard to the implementation of mixed effects model in OpenMx.
I am starting with a simple model where one dependent variable Y is predicted by four correlated variables X1-X4. The participants in the sample are clustered in pairs (they are twins).
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econnon
Joined: 10/03/2024
AdminHunter
Joined: 03/01/2013
OpenMx Master Class 2024 Questions
Hey y'all,
Put any OpenMx Master Class questions below in this thread. We'll reply to and address as many of them as possible.
Cheers,
Mike
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Ilaria
Joined: 07/22/2024
Problems with Constrain expected Means and Variances to be equal across Twin Order
Hi all,
I am trying to fit several bivariate [between my exposure at age 16 and my outcomes at age 21 (accounting for age and sex)] and trivariate [my exposure at age 16 and my outcomes at ages 21 and 26 (also accounting for age and sex)] ACE models. However, I’ve started by fitting univariate saturated and submodels, followed by ACE and submodels, to eventually fit my bivariate models. The saturated models run fine across all, but when I try to fit the constrained models (by twin order and zygosity), I get the following error message:
Ilaria
Joined: 07/22/2024
OpenMx Installation - cannot open the connection - 'failure when receiving data from the peer'
Hi OpenMx community,
I am very new to OpenMx. I am using it to fit saturated and ACE models to my twin data. I had successfully installed OpenMx using the script for the OpenMx website: source('https://vipbg.vcu.edu/vipbg/OpenMx2/software/getOpenMx.R')
But now when I am trying to re-run my models and use this version of openMx I receive the following error messages:
vadim
Joined: 08/03/2024
problems with simple ACE model
Dear experts,
I am running a simple ACE model for twin analysis with age and gender as confounds (115 DZ pairs and 60 MZ pairs). I use the model from International Statistical Genetics Workshop:
[https://ibg.colorado.edu/cdrom2022/day2/00_ACEvc_contin.R](https://ibg.colorado.edu/cdrom2022/day2/00_ACEvc_contin.R "https://ibg.colorado.edu/cdrom2022/day2/00_ACEvc_contin.R")
When I run the model, I get the following results:
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loveyu3317
Joined: 07/25/2024
five-factor model
Hi,
I'm using OpenMx to run a five-factor CFA model for 14 variables. "phenfile0" is the dataset and I used its 3rd to 16th columns as a input with the colnames of "y1" to "y14".
"y12" "y13" "y14" belong to "F1"; "y9" "y10" "y11" belong to "F2"; "y6" "y7" "y8" belong to F3; "y3" "y4" "y5" belong to F4; and "y1" "y2" belong to F5.
**Issue**: the output gave a larger SE for some loadings. I'm not sure if the code is correct. Thanks for your help!
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krzysiek
Joined: 09/05/2013
how to compare two correlation matrices
Hi,
I'm trying to compare two correlation matrices from a study of two different samples of people from different cultures. These matrices aren't symmetrical because they represent the correlations of two different sets of psychological tests. Is there a way to do this in OpenMx?
Thanks in advance for your help.
Krzysztof
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didenursahin
Joined: 03/20/2023
Fitting AE CE and E model to a bivariate model
Hello,
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didenursahin
Joined: 03/20/2023
Variance model graph
Hey,
Does anyone have a graph template for the bivariate variance estimate model?
Best,
Didi
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