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#' Creates input data frame for construction of MAP prior
#'
#' Assembling information from trials in the source population in a structured way (required as a pre-processing step for MAP prior creation).
#'
#' @param study_label An optional vector containing trial labels.
#' @param n_total A vector containing total sample sizes.
#' @param est A vector containing treatment effect estimates.
#' @param se A vector containing standard errors of the effect estimates.
#'
#' @return A data frame containing data on the trials in the source population.
#' @export
#' @seealso \code{\link{create_new_trial_data}}, \code{\link{create_posterior_data}}
#' @examples
#' prior_data <- create_prior_data(
#' n_total = c(160, 240, 320),
#' est = c(1.23, 1.40, 1.51),
#' se = c(0.4, 0.36, 0.31)
#' )
create_prior_data <-
function(study_label = NULL,
n_total,
est,
se) {
if ((any(n_total != round(n_total))))
stop("`n_total` must be a whole number")
if ((any(n_total <= 0)))
stop("`n_total` must be positive")
if (!(is.numeric(est)))
stop("`est` must be numeric")
if (!(is.numeric(se)))
stop("`se` must be numeric")
if ((any(se <= 0)))
stop("`se` must be positive")
if (missing(study_label)) {
study_label <-
paste("Study", seq(
from = 1,
to = length(est),
by = 1
))
}
prior_data <-
data.frame(study_label, n_total, est, se)
return(prior_data)
}
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