what does multilevel survival analysis predict? how is aggregation in a multilevel model how to predict outmigration in multi level survival analysis what is the difference between time-varying and time-invariant predictors why are time varying predictors used in multilevel survival analysis time varying model what are the different multilevel survival models time dependent aggregation models time varying predictors aggregation time varying predictor model what is the time varying predictor what model predicts household outmigration what is the difference between the time variable and the time variable of a survival model? which is an example of a time invariant predictor of household mig? logistic model of household dynamics time-varying predictors what is logistic regression used for what is the model that predicts household outmigration what model uses time varying predictor what is multilevel model for survival