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Multilevel/Mixed Models Using Stata

August 24 : 18:00 - August 27 : 22:00 CEST

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This course is an introduction to using Stata to fit multilevel/mixed models. Mixed models contain both fixed effects analogous to the coefficients in standard regression models and random effects not directly estimated but instead summarized through the unique elements of their variance–covariance matrix. Mixed models may contain multiple levels of nested random effects. These models are also referred to as multilevel or hierarchical models.

The course will be interactive, use real data, and offer ample opportunity for specific research questions and for working exercises to reinforce what is learned.

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Course topics

  • Modeling clustered data
    • The random-intercept model
    • The within estimator versus the generalized least squares (GLS) estimator; the Hausman test
    • Maximum likelihood and restricted maximum likelihood
    • Using the mixed and xtreg commands for the random-intercept model
    • Small sample inference for fixed effects in mixed models
  • The random coefficients model
    • Adding random coefficients
    • Covariance structures for random effects
    • Specifying models hierarchically
    • Growth curves
  • More complex models
    • Multiple-level models
    • Crossed-effects models
    • Complex and grouped constraints on variance components
    • Heteroskedastic errors
    • Alternate error structures
  • Binary and count responses
    • Models for binary and count responses
    • Estimation via adaptive Gaussian quadrature
    • Model building using the Laplacian approximation
  • Predictions, model diagnostics, and other postestimation tasks
    • Empirical Bayes predictions
    • Residuals
    • Fit diagnostics
    • Diagnostic plots
    • Cataloging and comparing mixed-model results in Stata
    • Likelihood-ratio (LR) tests


  • Knowledge of linear regression and a working knowledge of Stata.

Dates and Time

  • August 24-27, 2021
  • 18:00 – 22:00 CET (6 – 10 PM CET) (5 – 9 PM UK/GMT)

Click here to Enroll


August 24 : 18:00 CEST
August 27 : 22:00 CEST
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StataCorp LLC
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Event Conditions

Course registration is binding. Upon cancellation more than 8 working days before the course start date, we invoice 50% of the course fee. Upon cancellation less than 8 working days before the course start date, we invoice the full course fee. Click here to read the full Terms and Conditions!