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st: Bug in estat teffects?

From   Dave Garson <[email protected]>
To   [email protected]
Subject   st: Bug in estat teffects?
Date   Thu, 17 Apr 2014 18:31:50 -0400

I am running a model with the sem command. One direct path in the model has a value of .73 unstandardized or .34 standardized.

When total effects are partitioned into direct and indirect paths, " Direct effects are the path coefficients in the model.", as per "help sem teffects", which also states the "standardized (option) reports effects in standardized form".

Whether I run the sem standardized or unstandardized, if in postestimation I ask for "estat teffects,standardized" the direct effect in question is always the unstandardized value (.73) and the partition is based on unstandardized values.

To me this appears to be a bug in Stata, causing the "standardized" option to be ignored. However, is any reader able to shed light on this? I wish to do a standardized partition as I can in SPSS or SAS, and get the same results. Before I tell my students that this is impossible in Stata (except manually), I would like to check with the knowledge in this group.


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