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Table 2 Coefficients of the regression model used for the centiles computation

From: New anthropometry-based age- and sex-specific reference values for urinary 24-hour creatinine excretion based on the adult Swiss population

Variable

Parameter

Coefficient

P -value

Intercept

β0

266.16

<0.001

Sex (if women)

β1

−47.71

<0.001

BMI (kg/m2)

β2

−2.33

<0.001

Age (years)

β3

0.66

0.05

Age2 (years2)

β4

−0.017

<0.001

  1. A linear regression model was used to predict the 24-hour urinary creatinine excretion per body weight (expressed in μmol/kg/24 hours).