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METASEM with 3 variables

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No user picture. guchriste Joined: 08/31/2018
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metaSEM

Hello,

We would like to conduct a METASEM for a model with three variables: Mov (dependant); Psy & pai (independent).

I used the R codes available in Cheung and in Hagger 2018. Unfortunately, I have an error to determine the indirect effect of Pai on Mov through Psy. I can only have the direct effects between the three variables.

I think the problem occurs in stage 2 :

> random2 <- tssem2(random1, Amatrix=A1, Smatrix=S1, diag.constraints=TRUE,
+ intervals.type="LB", mx.algebras( Ind=mxAlgebra(PaitoPsy*PaitoMov, name="Ind"))

Thanks for your help,
Guillaume

Replied on Wed, 09/05/2018 - 22:29
Picture of user. Mike Cheung Joined: 10/08/2009

Hi Guillaume,

Could you attach the R code in plain text? It's difficult to work with the PDF.

Best,
Mike

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Replied on Mon, 02/25/2019 - 10:49
No user picture. guchriste Joined: 08/31/2018

Dear Mike,

I am trying to perform the MASEM with some missing variables. You previously helped me the code, but now that I have included more studies with some missing effect sizes, it doesn't work anymore when I perform this function :

fix1 <- tssem1(Studiestest10$data, Studiestest10$n, method="FEM")
summary(fix1)

You can see the script attached.

I saw in Hagger 2018 and in some of your papers that we can include studies with missing effect sizes, isn't it ?

Thank you so much for your help,
Guillaume

File attachments
MASEM pain-related fear.txt
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Replied on Tue, 02/26/2019 - 02:38
Picture of user. Mike Cheung Joined: 10/08/2009

Hi Guillaume,
You may try the following code. It works for me.

fix1 <- tssem1(Studiestest10$data, Studiestest10$n, method="REM", RE.type = "Zero")

Best,
Mike

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