which method differs the migration and fertility equations? why do fertility equations differ in estimating procedure is migration multiprocess why is the methodological procedure differ from the estimates procedure? migration and fertility: can migration and fertility be used in parallel how are migration and fertility models used to determine fertility how does model estimation work on fertility what is the difference between migration and fertility estimates? how can you use a migration equation to predict the fertility of an applicant what is migration in fertility what is the difference between a multiprocess model of fertility and migration? why is the model used for migration how to use a multi-process fertility model why do fertility equations differ? why is the estimation procedure extended in a discrete time setting? how to apply multiprocess fertility why is the migration equation used in fertility how do fertility estimates differ between two models? how does the estimation procedure vary across the migration equation