addFactorVariables      Create factor variables from data dictionary
checkData               Check the entered data against the data
                        dictionary
createCalculated        Create calculated variables
createCategorisedVar    Create categories from continuous data
createCombinedVar       Create a combined variable from several
                        dichotomous variables
createRecodedVar        Create survival variables (survival duration +
                        status)
createSurvVar           Create survival variables (survival duration +
                        status)
importCodes             Return A data frame of codes
importExcelData         Import Excel Data based on the specifications
                        in a data dictionary
plotVariables           Return a list of univariate ggplots for each
                        non-character variable
readDataDict            Read in the data dictionary
readExcelData           Read Excel Data
