egfr.ckdepi             CKD-EPI
egfr.mdrd4              Calculate estimated glomerular filtration rate
                        (eGFR) by different equations
egfr.schwartz           Schwartz (for children only)
kidney.epi              Kidney functions for R: clinical and
                        epidemiological
ktx                     Sample dataset with kidney transplant patients.
ktx.kdpi.optn           Calculate KDRI and KDPI for deceased kidney
                        donor
ktx.kdpi.optn.show.years
                        Shows which years are available in the R
                        package for the OPTN mapping table, KDRI
                        scaling factor, etc.
service.check_obligatory_params
                        Check whether all obligatory paramenters of a
                        given function are present.
service.check_param_arguments
                        Check the argument of a given parameter which
                        set by user and stop function if the value set
                        by user is not among the possible values of the
                        argument
service.check_param_number
                        Check number of parameters and stop function if
                        it exceeds the expected number of parameters
service.check_params_numeric
                        Check whether the following variables are
                        numeric and stop function if at least one of
                        them is not numeric
service.check_plausibility.age
                        Service functions for data check on biological
                        plausibility and biochemistry conversion which
                        could be applied in any function of the package
                        or externally
service.check_plausibility.creatinine
                        Check and modify if necessary the creatinine
                        values.
service.convert_creatinine
                        Convert creatinine values if necessary
                        (depending on the mesurement units).
service.count_greater_threshhold
                        Count how many values are greater than the
                        defined threshhold.
service.count_lowerequal_threshhold
                        Count how many values are less or equal than
                        the defined threshhold.
service.is.param_possible
                        Service functions for data check which could be
                        applied in any function of the package or
                        externally
service.is_numeric      Check whether a vector is numeric.
service.output_message
                        Produce message for warning or cat
service.singular_or_plural
                        Form output message in singular or plural.
service.strict_to_numeric_threshhold_greater
                        Select only numeric values lower than defined
                        threshhold
service.strict_to_numeric_threshhold_lower
                        Select only numeric values greater than defined
                        threshhold.
