Churn Modelling by Cohorts / Vintages?

Anyone have any useful primers or online resource that speak about modelling customer churn by cohorts? i.e. 2018 vintage has this churn curve, 2019 has this churn give and so on?

In the context of modelling a payments service provider, where revenue is taken as a take rate of total transaction value, and total transaction value is in turn modelled by the cumulative customers * avg. transactions * avg. value per transactions, but later cohorts may have greater avg. transactions growth due to improved quality of the PSP etc

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