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13 Jun 2017 Stata supports the estimation of several types of multilevel mixed models, also models, and in the context of panel data, repeated-measures or growth-curve For more complex models, the command xtmixed may be used to estimate a y. +. = ][. Ho: Random-effects = 0. NOTE: Stata 13, the command changed to "mixed" . xtmixed y x1 || school: x1, mle nolog covariance(unstructure). This is easy to do with statsby , creating variables sa and sb in a new Stata dataset called "ols", We will use xtmixed instead of xtreg so we can get BLUPS. The XTMIXED function is for Multilevel mixed-effects linear regressions in a manner similar to most other Stata estimation commands, that is, as a dependent use https://data.princeton.edu/pop510/egm, clear (Data from HLM 6 manual on math Iteration 1: log likelihood = -12652.99 Computing standard errors: Mixed-effects ML regression Number .. In Stata we use predict with the reffects option. xtmixed $ylist $xlist || id:, mle. It still doesn't seem to calculate the mixed effect for my panel data. The commands: xtmixed $ylist $xlist || id: || t: 27 Mar 2018 REFERENCE MANUAL, and from Paul Allison's book, Fixed Effects Regression Models The Stata XT manual is also a good reference, as is. [XT] xtmixed -- Multilevel mixed-effects linear regression . Mixed models are characterized as containing both fixed effects and random effects. . Stata estimation commands, that is, as a dependent variable followed by a set of regressors. The .xtmixed command estimates multilevel models (or any model with a mix of fixed and random effects) in Stata. Due to the lack of any predictors, only the