Recently, a new weight estimation technique, the Argall
formula, has been developed in the United Kingdom.
It uses a child’s age to determine weight, and it is calculated
as weight (kilograms) = (age in years + 2) x 3.7 It has
been reported that this formula is more accurate than
the Broselow tape for estimating weight.7 To date, this
formula has not been validated, either in the study population
in which it was developed, or externally. The aim of this study was to externally validate the Argall
weight estimation formula.