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Calculate an estimated serum creatinine. Function takes vectorized input as well.

Usage

calc_creat(
  sex = NULL,
  age = NULL,
  weight = NULL,
  height = NULL,
  adult_method = c("johanssen", "brooks"),
  digits = 1
)

Arguments

sex

sex, either `male` or `female`

age

age in years

weight

weight in kg (default 75 kg)

height

height in cm (default 165 cm)

adult_method

estimation adult method, `johanssen` (default) or `brooks`,

digits

number of digits to round to

Details

For children and adolescents: Uses equations described in Ceriotti et al. Clin Chem. 2008, and Junge W et al. Clin Chim Acta. 2004. For age 15-18, a linear interpolation is used between equations for <15 Johanssen A et al. Ther Drug Monit 2011. For adults: Two methods are available Johanssen et al. Ther Drug Monit 2011. which describes a flat serum creatinine dependent on sex, and Brooks et al (unpublished) which is a linear regression built on the NHANES open-source data and takes into account sex, age, weight, and height. Equation: `lm(SCr~Age+Sex+Weight+Height, data=NHANES)`