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Dex posted on Sunday, November 05, 2017  2:08 pm



Hi Drs. Muthen, I was wondering when conducting ordinal factor analysis(using WLSMV), if multiple imputation is used, how does Mpuls compute the ChiSquare test statistics?Is the aggregated ChiSquare simply the average across imputations? 


That chisquare is not available when multiple imputations are used but you can see some of the complexities involved for the ML estimator when all variables are continuous here: http://statmodel.com/download/MI7.pdf You can also see there that the chisquare test is not simply the average. If you have a particular hypothesis you need to test, Model Test is available with WLSMV and multiple imputations. 

Dex posted on Tuesday, November 07, 2017  5:20 pm



Thank you for your reply. I understand that the Meng and Rubin (1992)'s procedure is only implemented for ML estimator. When using multiple imputation + WLSMV to fit ordinal factor analysis; Mplus (v 7.4) also print chisquare and RMSEA. I guess my question is under this specific setting, how does Mplus actually compute the chisquare statistics? Is native average approach used here? 


We just report the average. It is not meant to be treated as an actual test of fit. It should say the "Mean" of the chisquare tests in the output. 

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