R/headache.R

In datarium: Data Bank for Statistical Analysis and Visualization

#'Headache Data for Three Way ANOVA
#'
#'@description Measures of cholesterol concentration in 72 participants treated
#'  with three different drugs. The aim is to examine the potential of new class
#'  of drugs in lowering the cholesterol concentration and consequently reducing
#'  heart attack.
#'
#'  A pharmaceutical company tested three treatments for migraine headache
#'  sufferers. 72 participants were enrolled in the experiments. The aim is to
#'  examine the potential of new class of treatments in lowering the pain score
#'  associated with the migraine headache episode.
#'
#'  The participants include 36 males and 36 females. Males and females were
#'  further (equally) subdivided into whether they were at low or high risk of
#'  migraine headache.
#'
#'  This data set is suited for three way Anova test.
#'
#'  It contain the following variables: \itemize{ \item gender, which has two
#'  categories: "male" and "female"; \item risk which has two levels: "low" and
#'  "high" \item treatment, which has three categories: "X", "Y" and "Z". }
#'@name headache
#'@docType data
#'@usage data("headache")
#'@format A data frame with 72 rows and 4 columns.
#' @examples
#' data(headache)
#' head(as.data.frame(headache))
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