Cohortsact as a category that reflects the time period of the model. For example, if a monthly model goes from Jan '22 to Dec '22, adding cohorts would add 12 items, one for each month in the model.
cohortcategory in the variable or by referencing cohorts in the formula. Below is a simple example of using cohorts ->
New sign-upsis 1,000 for our first month and grows at 5%
What is the "cohort" and "t-cohort" doing?
t-cohortas the time modifier of the
Activationsvariable, we are telling Causal to use the 1st month activation rate (i.e. 45%) for the first month of the cohort (Jan'22 for the Jan'22 cohort), the second activation rate (25%) for the second month of that cohort (Feb'22 for the Jan'22 cohort), and so on.