| has gloss | eng: The Ponderal Index PI is a measure of leanness of a person calculated as a relationship between mass and height. It was first proposed 1921 as "Corpulence Index" by Rohrer . It is similar to the Body mass index, however the mass is normalized with the third power of body height rather than the second power. :\mathrmPI} = \fracmass}height^3} with mass in kg (kilograms) and height in m (meters), giving a measure with the same dimensions as density. The ponderal index yields valid results even for very short and very tall persons . Because of this property, it is most commonly used in pediatrics |