CAC: Here you take the sum of all your sales and marketing
expenses over a given period of time (Salaries, tools, spend) and divide by the number of new customers acquired in that same time period.
The study assessed ambulance - dispatch patterns in New York state,
over a
period of several years, to examine how otherwise similar groups of patients fare when
given varying levels of treatment; different hospitals tend to provide different levels of treatment, and thus
expenses, in emergency care.