neastbenchmark: Benchmark Data for Disease Clusters

#' Breast cancer mortality in the Northeastern United States
#'
#' Data related to breast cancer mortality in the
#' Northeastern United States.  The data include information
#' from 245 counties (or similar). The following variables
#' are included in the data frame:
#' \itemize{
#' \item \code{id}: A name-based id for each county.
#' \item \code{cases}: The number of breast cancer
#' mortality cases between 1988-1992.
#' \item \code{population}: The number of residents in the county
#' based on 1990 U.S. census results.
#' \item \code{x}: An x coordinate of a centroid associated
#' with each county provided by Kulldorff et al. (2003). See
#' Details.
#' \item \code{y}: A y coordinate of a centroid associated
#' with each county provided by Kulldorff et al. (2003). See
#' Details.
#' \item \code{easting}: Identical to \code{x}. Retained for
#' reverse compatibility.
#' \item \code{northing}: Identical to \code{y}. Retained for
#' reverse compatibility.
#' }
#'
#' The \code{x} and \code{y} coordinates define centroids
#' associated with each county. The coordinates were
#' provided by Kulldorf et al. (2003). The coordinate system
#' of these coordinates is unknown.
#' @name neastdata
#' @docType data
#' @references Martin Kulldorff, Eric J. Feuer, Barry A.
#'   Miller, Laurence S. Freedman; Breast Cancer Clusters in
#'   the Northeast United States: A Geographic Analysis,
#'   American Journal of Epidemiology, Volume 146, Issue 2,
#'   15 July 1997, Pages 161–170,
#'   \url{https://doi.org/10.1093/oxfordjournals.aje.a009247}
#'
#' @keywords data
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