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MERLIN: Stata module to fit mixed effects regression for linear and non-linear models

Author

Listed:
  • Michael J. Crowther

    (Red Door Analytics)

Programming Language

Stata

Abstract

merlin fits linear, non-linear and user-defined mixed effects regression models. merlin can fit multivariate outcome models of any type, each of which could be repeatedly measured (longitudinal), with any number of levels, and with any number of random effects at each level. Standard distributions/models available include the Bernoulli, beta, gamma, Gaussian, linear quantile, negative binomial, ordinal, Poisson, and time-to-event/survival models include the exponential, gompertz, splines on the log hazard scale, Royston-Parmar, and Weibull. merlin provides a flexible predictor syntax, allowing the user to define variables, random effects, spline and fractional polynomial functions, functions of other outcome models, and any interaction between each of them. Non-linear and time-dependent effects are seamlessly incorporated into the predictor. merlin allows level-specific random effect distributions, either multivariate normal or t, which are integrated out using either Gaussian quadrature or Monte-Carlo integration. See https://www.mjcrowther.co.uk/software/merlin for detailed examples.

Suggested Citation

  • Michael J. Crowther, 2018. "MERLIN: Stata module to fit mixed effects regression for linear and non-linear models," Statistical Software Components S458478, Boston College Department of Economics, revised 20 Aug 2023.
    • Handle: RePEc:boc:bocode:s458478
    Note: This module should be installed from within Stata by typing "ssc install merlin". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser.
    as

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    File URL: http://fmwww.bc.edu/repec/bocode/m/merlin.ado
    File Function: program code
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    File URL: http://fmwww.bc.edu/repec/bocode/m/merlin.sthlp
    File Function: help file
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    File URL: http://fmwww.bc.edu/repec/bocode/m/merlin_p.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/m/merlin_parse.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/e/exptorcs.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/s/stmerlin.ado
    File Function: program code
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    File URL: http://fmwww.bc.edu/repec/bocode/m/merlin_estimation.sthlp
    File Function: help file
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    File URL: http://fmwww.bc.edu/repec/bocode/m/merlin_model_options.sthlp
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    File URL: http://fmwww.bc.edu/repec/bocode/m/merlin_models.sthlp
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    File URL: http://fmwww.bc.edu/repec/bocode/m/merlin_postestimation.sthlp
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    File URL: http://fmwww.bc.edu/repec/bocode/m/merlin_user.sthlp
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    File URL: http://fmwww.bc.edu/repec/bocode/m/merlin_reporting.sthlp
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    File URL: http://fmwww.bc.edu/repec/bocode/e/exptorcs.sthlp
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    File URL: http://fmwww.bc.edu/repec/bocode/s/stmerlin.sthlp
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    File URL: http://fmwww.bc.edu/repec/bocode/s/stmerlin_postestimation.sthlp
    File Function: help file
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    File URL: http://fmwww.bc.edu/repec/bocode/l/lmerlin.mlib
    File Function: Mata object library
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