is shared frailty considered a multi level variable? what is the variance of the cox model is the wealth vs the socioeconomic index in cox regression what is cox model of theta mlm model of shared frailty which is more significant, cox survival analysis, or streg which variable is the mlm how many ses variables are present in a cox regression which of the following is a multilevel model used to determine the likelihood of survival? why does the ses index differ in each area level? can you do s se models separately why is the socioeconomic indices independent when using the wealth variable which is a multilevel model of social factors? which of the following is not a cox survival model? is individual socioeconomic index correlated to individual wealth variable? do the three variables in the mlm model have to be correlated? does a socio economic analysis have to include a mortality event in all units of a cox model? how many events in a single ward is the a-r-ses measure related to illness why use the vs wealth variable separately