Mplus Users Guide v6.. - Muthén & Muthén

MONTECARLO Commandtime intervals in the baseline hazard function to be used in the analysis.The SURVIVAL option is specified as follows:SURVIVAL = t (4*5 10);where t is the variable that contains time to event information. Thenumbers in parentheses specify that four time intervals of length five andone time interval of length ten are used in the analysis.If no time intervals are specified, a constant baseline hazard is used.Following is an example of how this is specified:SURVIVAL = t;The keyword ALL can be used if the time intervals are taken from thedata. Following is an example of how this is specified:SURVIVAL = t (ALL);It is not recommended to use the ALL keyword when theBASEHAZARD option of the ANALYSIS command is ON because itresults in a large number of baseline hazard parameters.In continuous-time survival modeling, there are as many baseline hazardparameters are there are time intervals plus one. When theBASEHAZARD option of the ANALYSIS command is ON, theseparameters can be referred to in the MODEL command by adding to thename of the time-to-event variable the number sign (#) followed by anumber. For example, for a time-to-event variable t with 5 timeintervals, the six baseline hazard parameters are referred to as t#1, t#2,t#3, t#4, t#5, and t#6. In addition to the baseline hazard parameters, thetime-to-event variable has a mean or an intercept.VARIABLES WITH SPECIAL FUNCTIONS FORDATA GENERATION AND ANALYSISThe TSCORES, WITHIN, and BETWEEN options are used for bothdata generation and in the analysis. These options are described below.705