egfr.schwartz.cr_cys: Calculate eGFR by Schwartz multivariate equation with...
In kidney.epi: Kidney-Related Functions for Clinical and Epidemiological Research

egfr.schwartz.cr_cys

R Documentation

Calculate eGFR by Schwartz multivariate equation with cystatin C, ht/Scr, and BUN(for children only)

Description

Calculate eGFR by Schwartz multivariate equation with cystatin C, ht/Scr, and BUN(for children only)

Usage

egfr.schwartz.cr_cys(
  creatinine,
  creatinine_units = "mg/dL",
  cystatin,
  cystatin_units = "mg/L",
  bun,
  bun_units = "mg/dL",
  sex,
  height_cm = 0,
  height_ft = 0,
  height_inch = 0,
  label_sex_male = c("Male", 1),
  label_sex_female = c("Female", 0)
)

Arguments

`creatinine`	Numeric vector. Serum creatinine, could be expressed in "micromol/L", "mmol/L" or "mg/dL". Units of measurement should be defined in variable creatinine_units (if not defined explicitly by user, the default value is "micromol/L").
`creatinine_units`	Character string. Units in which serum creatinine is expressed. Could be one of the following: "micromol/L", "mmol/L" or "mg/dL".
`cystatin`	Numeric vector. Serum cystatin, could be expressed in "mg/L" or "nanomol/L". Units of measurement should be defined in variable cystatin_units (if not defined explicitly by user, the default value is "mg/L").
`cystatin_units`	Character string. Units in which serum cystatin is expressed. Could be one of the following: "mg/L" or "nanomol/L".
`bun`	Numeric vector. Blood urea nitrogen, could be expressed in "mg/dL" or "mmol/L". Units of measurement should be defined in variable bun_units (if not defined explicitly by user, the default value is "mg/dL").
`bun_units`	Character string. Units in which blood urea nitrogen is expressed. Could be one of the following: "mg/dL" or "mmol/L".
`sex`	Vector. The value of variable refers to the parameters label_sex_male and label_sex_female.
`height_cm`	Numeric vector. Could be defined either as height_cm if is measured in cm, or as height_ft and height_inch if is measured in feet and inches. If the parameter height_cm is greater than 0, the function uses cm, otherwise - feet and inches.
`height_ft`	see height_cm
`height_inch`	see height_cm
`label_sex_male`	List. Label(s) for definition(s) of male sex.
`label_sex_female`	List. Label(s) for definition(s) of female sex.

Details

Calculate estimated glomerular filtration rate (eGFR) by Schwartz multivariate equation with cystatin C, ht/Scr, and BUN.

Reference to the equation: Schwartz GJ, Schneider MF, Maier PS et al. Improved equations estimating GFR in children with chronic kidney disease using an immunonephelometric determination of cystatin C. Kidney Int 2012; 82: 445–453.

Citation: Bikbov B. kidney.epi: Kidney-Related Functions for Clinical and Epidemiological Research. Scientific-Tools.Org, https://Scientific-Tools.Org. DOI: 10.32614/CRAN.package.kidney.epi