R/naevi.R

In trobinj/trtools: Miscellaneous Tools for Teaching Statistics

#' Case-control study of children with spina bifida. 
#'
#' Data from a matched case-control study examining the association between spina bifida and the incidence of naevi (dark raised skin lesions). Cases were matched 1:1 with controls using sex and age. Cases are children with spina bifida whereas controls are children who do not have it. 
#'
#' @format A data frame of 42 observations and four variables:
#' \describe{
#'    \item{sex:}{child's sex (male or female)}
#'    \item{age:}{child's age in years}
#'    \item{case:}{number of naevi for the case child}
#'    \item{control:}{number of naevi for the control child}
#' }
#'
#' @note The data are from an example from Pawitan (2013). The original source is unknown.
#'
#' @source Pawitan, Y. (2013). \emph{In all likelihood: Statistical modeling and inference using likelihood}. Oxford University Press. 
#' 
"naevi"