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Mplus Users Guide v6.. - Muthén & Muthén

Mplus Users Guide v6.. - Muthén & Muthén

Mplus Users Guide v6.. - Muthén & Muthén

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MODEL Commandused in computing coverage. %WITHIN% is used to provide thepopulation parameter values for the individual-level model parameters.%BETWEEN% is used to provide the population parameter values forthe cluster-level model parameters. Each parameter in both theindividual-level and cluster-level parts of the model must be specifiedfollowed by the @ symbol or the asterisk (*) and the populationparameter value. Any model parameter not specified will have the valueof zero as the population parameter value.THE MODEL MISSING COMMANDThe MODEL MISSING command is used to provide information aboutthe population parameter values for the missing data model to be used inthe generation of data. The MODEL MISSING command has specialoptions for multiple group models and for mixture models. TheMISSING option of the MONTECARLO command is required forMODEL MISSING.Information about each variable listed in the MISSING statement of theMONTECARLO command must be included as part of the MODELMISSING command. These variables must be dependent variables inthe MODEL command. The probability of having missing data or not onthese dependent variables is described by logistic regressions in theMODEL MISSING command. In the MODEL MISSING command, themissing data indicators use the same names as the dependent variables inthe MODEL command. For each dependent variable, the intercept andslopes for all covariates must be specified for the logistic regression.The covariates in these logistic regressions can be both independent anddependent variables in the MODEL command. When a dependentvariable in the MODEL command is used as a dependent variable in thelogistic regression, it is a missing value indicator. When it is used as acovariate in the logistic regression, it is the original variable in theMODEL command. In the following example, in the first ON statementy1 is a missing value indicator variable. In the second ON statement, y1is treated as the original variable.MODEL MISSING:y1 ON x;y2 ON y1 x;629

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