This subfunction organizes the partially accruing data into a matrix that includes accrual lag as a variable.
Object of the
This should only be used on accrued data that are counts. No error will be thrown in the case of non-count data, but the results will not make sense.
A data frame with the columns consisting of event date (encounter date), record date (upload date), accrual lag (lag), counts (time series value), number added.
Julie Eaton and Ian Painter