R/inclabstracts.number.R

In nealhaddaway/predicter: A Tool to Estimates the Time Needed to Conduct a Systematic Review or Systematic Map

#' Number of abstracts included after abstract screening
#'
#' This function calculates the number of abstracts remaining after abstract
#' screening in a systematic review, based on the inputs of the number of
#' records remaining after title screening ('incltitles.number', see
#' 'incltitles.number' function) and the percentage of abstracts retained
#' through this abstract screening stage ('abstracts.retained'). Default
#' values are provided based on the empirical study of environmental
#' systematic reviews by Haddaway and Westgate (2018)
#' https://doi.org/10.1111/cobi.13231.

inclabstracts.number <- function(incltitles.number=1240.665,abstracts.retained=25){
  n.included.abstracts <- incltitles.number * ( abstracts.retained / 100 )
  return(n.included.abstracts)
}