ckd.data                A synthetic dataset contains variables for eGFR
                        calculation.
ckd.kdigo_category.albuminuria
                        Calculate KDIGO albuminuria categories
ckd.kdigo_category.gfr
                        Calculate eGFR categories
ckd.kdigo_category.proteinuria
                        Calculate proteinuria categories
ckd.kdigo_category.risk
                        Calculate KDIGO risk categories
egfr.all_adults.cr      Calculate eGFR by all creatinine-based
                        equations for adults
egfr.all_adults.cr_cys
                        Calculate eGFR by all creatinine-cystatin-based
                        equations for adults
egfr.all_adults.cys     Calculate eGFR by all cystatin-based equations
                        for adults
egfr.bis.cr             Calculate eGFR by the Berlin Initiative Study
                        (BIS1) creatinine-based equation
egfr.bis.cr_cys         Calculate eGFR by the Berlin Initiative Study
                        (BIS2) creatinine-cystatin C-based equation
egfr.cg.cr              Calculate creatinine clearance by the
                        Cockcroft-Gault equation
egfr.ckdepi.cr          Alias to the latest eGFR CKD-EPI
                        creatinine-based equation
egfr.ckdepi.cr.2009     Calculate eGFR based on CKD-EPI 2009
                        creatinine-based equation
egfr.ckdepi.cr.2021     Calculate eGFR by the CKD-EPI 2021
                        creatinine-based equation
egfr.ckdepi.cr_cys.2021
                        Calculate eGFR by the CKD-EPI 2021
                        creatinine-cystatin-based equation
egfr.ckid_u25.cr        Calculate eGFR by CKiD U25 creatinine-based
                        equation (for children and young adults less
                        then 25 years old)
egfr.ckid_u25.cys       Calculate eGFR by CKiD U25 cystatin-based
                        equation (for children and young adults less
                        then 25 years old)
egfr.ekfc.cr            Calculate eGFR by the EKFC creatinine-based
                        equation
egfr.ekfc.cys           Calculate eGFR by the EKFC cystatin-based
                        equation
egfr.fas.cr             Calculate eGFR by the Full age spectrum (FAS)
                        creatinine-based equation
egfr.fas.cr_cys         Calculate eGFR by the Full age spectrum (FAS)
                        creatinine-cystatin-based equation
egfr.fas.cys            Calculate eGFR by the Full age spectrum (FAS)
                        cystatin-based equation
egfr.lm.cr              Calculate eGFR by the revised Lund-Malmö
                        creatinine-based equation
egfr.mdrd4              Calculate estimated glomerular filtration rate
                        (eGFR) by MDRD equation
egfr.schwartz           Deprecated function name. Use specific
                        functions egfr.schwartz.cr(),
                        egfr.schwartz.cys(), egfr.schwartz.cr_cys().
egfr.schwartz.cr        Calculate eGFR by Schwartz creatinine-based
                        equation (for children only, both "classic"
                        bedside and "quadratic")
egfr.schwartz.cr_cys    Calculate eGFR by Schwartz multivariate
                        equation with cystatin C, ht/Scr, and BUN(for
                        children only)
egfr.schwartz.cys       Calculate eGFR by Schwartz cystatin C-based
                        equation (for children only)
ktx.data                A 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.
matrix.cross_table      Creates a named matrix from two variables.
matrix.get_named_matrix_value
                        Access matrix cells by row and column names
matrix.read_excel_to_named_matrix
                        Read Excel file and convert it to matrix with
                        row and column names.
matrix.save_named_matrix_to_excel
                        Save a named matrix as an Excel file.
nephro.albuminuria_category
                        Legacy function to calculate albuminuria
                        categories
nephro.gfr_category     Legacy function to calculate KDIGO GFR
                        categories
nephro.proteinuria_category
                        Legacy function to calculate proteinuria
                        categories
service.convert_creatinine
                        Convert creatinine values between measurement
                        units.
service.convert_cystatin
                        Convert cystatin C values between measurement
                        units.
