#' Data for matching cases with controls
#'
#' A dataset containing cases and controls using the Intego registry data.
#' The variables are as follows:
#'
#' \describe{
#'   \item{cluster_case}{Each case forms a cluster with all possible controls to be matched.}
#'   \item{Patient_Id}{Unique identifier for each patient.}
#'   \item{case_control}{Binary; if case == Colorectal Cancer, otherwise control.}
#'   \item{case_ind}{Binary; 1 = case, otherwise control.}
#'   \item{JCG}{Year of contact.}
#'   \item{entry_year}{The year that the patient first entered the database.}
#'   \item{CI}{Comorbidity Index. Count of chronic diseases before the index date.}
#'   \item{age_diff}{Difference in age between cases and controls.}
#'   \item{fup_diff}{Difference in follow-up between cases and controls.}
#'   \item{total_control_per_case}{Total controls available to be pooled per case.}
#'   \item{freq_of_controls}{Number of times the control is available to be matched for different cases.}
#' }
#'
#' @docType data
#' @keywords datasets
#' @name being_processed
#' @usage data(being_processed)
#' @format A data frame with 77110 rows and 11 variables
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