Mplus Users Guide v6.. - Muthén & Muthén

Examples: Mixture Modeling With Cross-Sectional Dataspecification, class 1 is the control group. In the model for class 2, thethreshold for u is fixed at -15 so that the probability that u equals one isone. By this specification, class 2 is the treatment group. In the overallmodel, the ON statement describes the Cox regression for the survivalvariable t on the covariate x. In class 1, the intercept in the Coxregression is fixed at zero. In class 2, it is free. This intercept representsthe treatment effect. The LOGRANK option of the OUTPUT commandprovides a logrank test of the equality of the treatment and controlsurvival curves (Mantel, 1966). By specifying PLOT2 in the PLOTcommand, the following plots are obtained:• Kaplan-Meier curve• Sample log cumulative hazard curve• Estimated baseline hazard curve• Estimated baseline survival curve• Estimated log cumulative baseline curve• Kaplan-Meier curve with estimated baseline survival curve• Sample log cumulative hazard curve with estimated logcumulative baseline curveAn explanation of the other commands can be found in Example 7.1.195