A vectorised formula to calculate estimate glomerular filtration rate in children using the bedside Schwartz formula. By default this uses serum creatinine in µmol/l but this can be changed to mg/dl by setting the optional units parameter to "US".

schwartz(creat, height, units = "SI")

Arguments

creat

numeric vector of creatinine levels in µmol/l (or mg/dl if units = "US")

height

numeric vector of heights in cm

units

non-vectorised optional parameter for creatinine unit ("SI" for µmol/l (default), "US" for mg/dl)

Value

numeric vector of eGFR values

Details

Reference: Schwartz GJ, Munoz A, Schneider MF et al. New equations to estimate GFR in children with CKD. J Am Soc Nephrol 2009; 20(3):629-637.

Examples

# calculate using creatinine in µmol/l schwartz(creat = 64, height = 101)
#> [1] 57.60156
# calculate using mg/dl schwartz(creat = 0.7, height = 101, units = "US")
#> [1] 59.59