Calculate eGFR by all cystatin-based equations for adults

Usage

egfr.all_adults.cys(cystatin, age, cystatin_units = "mg/L", max_age = 100)

Arguments

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").
age: Numeric vector. Age, in years.
cystatin_units: Character string. Units in which serum cystatin is expressed. Could be one of the following: "mg/L" or "nanomol/L"
max_age: Numeric. Maximal age suitable for the equation application, in years. By default is 100 years, but change this value in case you would like to apply equation to older persons.

Value

numeric eGFR expressed in ml/min/1.73m².

Details

Calculate eGFR by all cystatin-based equations for adults available in the kidney.epi package.

References to the equations are available in single functions of the kidney.epi package.

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

Author

Programming: Boris Bikbov https://www.linkedin.com/in/boris-bikbov.

Examples

# for a single patient
egfr.all_adults.cys (cystatin = 1.4, age = 60,
  cystatin_units = "mg/L")
#>   egfr.ekfc.cys egfr.fas.cys
#> 1         51.88        49.37
# for a dataset - see vignettes for details
# egfr.all_adults.cys (cystatin = dta$cys, age = dta$age, 
#  cystatin_units = "mg/L")