remss: Refining Evaluation Methodology on Stage System

#' remss: A package for refining evaluation methodology on stage system.
#' 
#' TNM stage is important in treatment decision-making and outcome predicting. The existing oropharyngeal Cancer                
#' (OPC) TNM stages have not made distinction of the two sub sites of HPV+ and HPV- diseases.We developed novel              
#' criteria to assess performance of the TNM stage grouping schemes based on parametric modeling adjusting on                    
#' important clinical factors. These criteria evaluate the TNM stage grouping scheme in five different measures:                  
#' hazard  consistency, hazard discrimination, explained variation, likelihood difference, and balance.
#'
#'
#' @section remss functions:
#' rank
#'
#' @docType package
#' @name remss
#' @references Xu, W., et al. 'Refining evaluation methodology on TNM stage system: assessment on HPV-related oropharyngeal cancer.' Austin Biom Biostat 2 (2015): 1014.
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