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Categorical DV in mediation analysis
Categorical Data Modeling
posted on Monday, September 12, 2011 - 3:00 am
Hi,would you like help me for 2 question?
I have a mediation model: one continuous IV, one continuous nediator variable and one three-category DV. I used model indirect and STDYX command in Mplus 6.After run, I found two things I couldnt understand:
1. In StdYX Estimate output, there is only Estimate,NO S.E..Why? Is the standardized formula same as binary DV of mediation analysis£¿as MacKinnon's paper£¨2007£©mentioned?
2. In the indirect output, how can we interpret unstandardized indirent effect?
Thanks for your sincerely reply.
Linda K. Muthen
posted on Tuesday, September 13, 2011 - 9:48 am
1. With WLSMV and covariates, we do not give standard errors for standardized estimates. Yes, the forumla is the same.
2. The interpretation is the same as for a regression coefficient, the change in y for a one unit change in x.
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