walser: eGFR using the Walser formula

In transplantr: Audit and Research Functions for Transplantation

Description

A vectorised function to calculate eGFR using the Walser formula. By default the equation accepts serum creatinine in µmol/l but can be changed to mg/dl by setting the units parameter to "US". It has not been possible to run automated tests to confirm the accuracy of this function, so please use with caution.

Usage

walser(SCr, Age, Weight, Sex, Units = "SI")

Arguments

SCr	numeric vector of serum creatinine in µmol/l (or mg/dl if units = "US")
Age	numeric vector of patient ages in years
Weight	numeric vector of patient weights in kilograms
Sex	character vector of sex ("F" for female, "M" for male)
Units	non-vectorised optional parameter for creatinine units ("SI" for µmol/l (default), "US" for mg/dl)

Details

Reference: Walser M, Drew HH, Guldan JL. Prediction of glomerular filtration rate in advanced chronic renal failure. Kidney International 1993; 44:2245-1148.

Value

numeric vectors of eGFR values

Examples

walser(SCr = 118, Age = 74, Weight = 65, Sex = "M") # 56.1

Example output

[1] 56.11054

transplantr documentation built on Feb. 28, 2020, 5:07 p.m.