+ Reply to Thread
Results 1 to 2 of 2

Thread: [STATA - gsem] Multilevel Structural Equation Model - Meta Analysis

  1. #1
    Points: 7, Level: 1
    Level completed: 13%, Points required for next Level: 43

    Thanked 0 Times in 0 Posts

    [STATA - gsem] Multilevel Structural Equation Model - Meta Analysis


    I am quite familiar with mixed effects (multilevel models) in meta analyses.
    Now, I want to do a mixed effects (multilevel) meta analysis structural equation model (MASEM) with STATA and the gsem package because my data format is long.

    My data look like:
    HTML Code: 
    `id studyId	performance	education moderator1 moderator2`  
     `1   1           -0.4 	      0.1 	    1 	        0`  
     `2   1 	   0.2 	      0.1 	    0 	        1`  
     `3   2 	   0.5 	      0.3 	    0 	        1`   
     `4   3 	  -0.1 	      0.4 	    1 	        0`  
     `5   3 	  -0.6 	      0.4 	    1 	        0`     

    performance: Firm-Performance, correlation coefficients (Fisher z transformed)
    moderator1-moderator2: My moderator variables, have some nusisance variables as well but do not display it here.
    education: Pre-dominant education level in a certain country

    All variables are weighted by w = fisher z variance + tau

    I want to model primary study effects nested in primary studies (results grouped in the related study).

    PHP Code: 
        gsem (performance <- moderator1 moderator2 education M1[id]@1 M2[id>studyId]@1)  
    moderator1 <- education M3[id]@1 M4[id>studyId]@1)  
    moderator2 <- education M5[id]@1 M6[id>studyId]@1),  
    Latent(M1 M2 M3 M4 M5)  
    cov(e.performance M1[id]*M2[id>studyId])
    I am not sure about the specification of the model in STATA.
    1. Did I model the covariances in a correct way?
    2. @1 means I normalize the latent variable. What alternatives do I have?
    3. Is it enough just to model the error term (e.performance) of the dependent variable performance or do I have to model all variables there?

    Thank you very much for your support :-)

  2. #2
    TS Contributor
    Points: 18,889, Level: 87
    Level completed: 8%, Points required for next Level: 461
    CowboyBear's Avatar
    New Zealand
    Thanked 427 Times in 328 Posts

    Re: [STATA - gsem] Multilevel Structural Equation Model - Meta Analysis

    Hiya, your post was automatically flagged as spam for some reason, I've released it from the moderation queue now - sorry about that!
    Matt aka CB | twitter.com/matthewmatix

+ Reply to Thread


Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Advertise on Talk Stats