R/Water.R

In CrossCarry: Analysis of Data from a Crossover Design with GEE

#'Water student data of crossover design
#'
#' A pilot study to investigate the impact of providing supplementary drinking
#' water on the cognitive performance of pupils of two school grades (5 and 6)
#' in water-scarce schools in rural Mali.
#' 47 students were assigned to take the control treatment (normal conditions)
#' on the first day and receive the treatment (controlled hydration)
#' on the second day. 60 received the treatments in reverse
#' (Hydration the first day and control the second day).
#' One part of this test assesses visual attention.
#' This test assesses visual attention. Pupils were given a grid containing
#' target letters randomly dispersed among non-target letters and were given
#' one minute to cross out as many target letters as possible.
#' Scores were calculated by subtracting the number of non-target letters
#' identified from the number of target letters identified; the maximum
#' test score was 38.
#'@format A data frame with 214 rows and 10 columns:
#'\describe{
#' \item{ID}{The unique identifier of each of the students}
#' \item{Age}{The age in years of each of the students}
#' \item{LCS}{Letter Cancel incorrect (raw score)}
#' \item{LCC}{Letter Cancel correct (raw score)}
#' \item{LCI}{Letter Cancel score (LCC-LCI)}
#' \item{sex}{ f=female, 1=male}
#' \item{school}{school indicator A or B}
#' \item{Treatment}{Condition indicator 0=Control 1=Water}
#' \item{Period}{date of visit}
#' \item{Carry_Agua}{Carry indicator 0=First period, 1=Water in the first period,
#' -1 = Control in the first period}
#'}
#'@source <https://journals.plos.org/plosone/article/authors?id=10.1371/journal.pone.0210568>
"Water"