runmixregls is a Stata command which allows Stata users to run the MIXREGLS mixed-effects location scale software from within Stata.
The mixed-effects location scale model extends the standard two-level random-intercept mixed-effects model for continuous responses (implemented in Stata as xtreg, mle) in three ways:
The distributions of the random-location and random-scale effects are assumed to be Gaussian.
MIXREGLS is developed by Hedeker and Nordgren (2013).
Read the runmixregls journal article for a comprehensive introduction to the command.
We have created a presentation to provide a quick overview of how runmixregls works and the range of models which can be fitted.
. ssc install runmixregls
We may make improvements to runmixregls over time. To check that you are using the latest version of runmixregls, type the following command:
. adoupdate runmixregls
We have created a comprehensive Stata help file for runmixregls.
runmixregls is not an official Stata command. It is a free contribution to the research community, like a paper. Please cite it as such:
Similarly, please also cite the MIXREGLS software:
We are very grateful to Don Hedeker and also colleagues at the Centre for Multilevel Modelling and the University of Bristol for their useful comments.
The development of this command was funded under the LEMMA3 project, a node of the UK Economic and Social Research Council's National Centre for Research Methods (grant number RES-576-25-0035).