mdrd_US: eGFR by abbreviated MDRD equation (US units)

In transplantr: Audit and Research Functions for Transplantation

Description

A wrapper for the mdrd4v() vectorised function to calculate estimated glomerular filtration rate using the abbreviated (four variable) MDRD equation, but using serum creatinine in mg/dl. To allow for serial measurements over time, such as for transplant follow-up data, there is an optional offset = n parameter which increases the age value used in the equation by n years.

Usage

mdrd_US(creat, age, sex, ethnicity, offset = 0)

Arguments

creat	numeric vector of serum creatinine in µmol/l (or mg/dl if units = "US")
age	numeric vector of age in years (accepts integers or decimals)
sex	character vector of sex ("F" for female, "M" for male)
ethnicity	character vector of patient ethnicity, one of "black" or "non-black"
offset	non-vectorised optional parameter for offset in years

Details

Reference: Levey AS, Greene T, Kusek JW, et al. A simplified equation to predict glomerular filtration rate from serum creatinine. J Am Soc Nephrol 2000; 11:A0828.

Value

a numeric vector of eGFR values

Examples

mdrd_US(creat = 1.5, age = 64.3, sex = "F", ethnicity = "black")

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